{"title":"BIG BORE KITS","description":"BIG BORE KITS","products":[{"product_id":"s-s-cycle-129-power-package-with-hpt496-gear-drive-oil-cooled-black-with-highlights-m8-part-310-1398","title":"S\u0026S CYCLE 129\" Power Package with HPT496 Gear Drive - Oil Cooled - Black with Highlights, M8 - Part 310-1398","description":"\u003cp\u003e129\" Power Package - HPT496 - Gear Drive - Oil Cooled - Black with Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE 129\" Power Package (Part Number 310-1398) is engineered to deliver exceptional performance for high-powered motorcycle builds. Featuring the HPT496 gear drive system, this package ensures precise timing and durability under demanding conditions. Its oil-cooled design helps maintain optimal operating temperatures, contributing to increased longevity and consistent power delivery. The sleek black finish with eye-catching highlights adds a stylish touch to any motorcycle engine bay, combining aesthetics with functionality. This power package is designed for M8 applications, making it compatible with a wide range of custom and stock setups. Installation requires technical expertise, but the performance benefits are well worth the effort. Whether you're upgrading for street riding or high-performance applications, this package provides the reliability and power you need for an enhanced riding experience.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e129-inch displacement for substantial power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHPT496 gear drive system for precise timing and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOil-cooled design maintains optimal engine temperature\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish with highlights for a stylish appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eM8 compatibility for versatile installation\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883630862529,"sku":"0904-0184","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5687581.png?v=1767396073"},{"product_id":"s-s-cycle-129-power-package-hpt496-gear-drive-oil-cooled-for-m8-engines","title":"S\u0026S CYCLE 129\" Power Package HPT496 Gear Drive Oil Cooled for M8 Engines","description":"\u003cp\u003e129\" Power Package - HPT496 - Gear Drive - Oil Cooled - Black w\/o Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE 129\" Power Package (Part Number: 310-1397) is designed to deliver exceptional performance for M8 engine applications. This comprehensive power package features a gear drive system that ensures precise timing and reliable operation, making it ideal for high-performance motorcycle builds. The oil-cooled design helps maintain optimal operating temperatures, increasing longevity and reducing maintenance needs. Its sleek black finish without highlights offers a clean, professional look that complements various motorcycle styles. Built with quality and durability in mind, this power package is suitable for riders seeking increased horsepower and torque for aggressive riding or custom builds. Installation involves standard procedures, and compatibility with M8 models ensures a straightforward upgrade process for enthusiasts and professional builders alike.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003ePowerful 129-inch displacement enhances horsepower and torque.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eGear drive system provides precise timing and durability.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOil-cooled design maintains optimal operating temperature.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish offers a sleek, understated appearance.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned specifically for M8 engine applications, ensuring compatibility.\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883630895297,"sku":"0904-0183","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5687578.png?v=1767396082"},{"product_id":"s-s-cycle-129-power-package-with-hpt496-cam-chain-drive-and-oil-cooled-system-black-with-highlights-part-310-1395","title":"S\u0026S Cycle 129\" Power Package with HPT496 Cam, Chain Drive, and Oil Cooled System - Black with Highlights, Part 310-1395","description":"\u003cp\u003e129\" Power Package - HPT496 - Chain Drive - Oil Cooled - Black with Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S Cycle 129\" Power Package offers exceptional performance and durability for custom motorcycle builds. Featuring the HPT496 camshaft, this package is engineered to deliver increased horsepower and torque, making it ideal for high-performance applications. The chain drive system ensures reliable power transmission, while the oil-cooled design maintains optimal operating temperatures for enhanced longevity and consistent performance. The striking black finish with highlights provides an aggressive appearance, complementing any custom build or upgrade. This power package is designed for easy installation and compatibility with M8 engines, making it a versatile choice for enthusiasts seeking to elevate their motorcycle's capabilities.\u003cbr\u003eBuilt with high-quality materials and precision engineering, the S\u0026amp;S Cycle 129\" Power Package ensures maximum efficiency and a longer service life. The included components are meticulously assembled to meet the highest standards, providing confidence in every ride. Whether you're customizing a new bike or upgrading an existing one, this package offers the perfect combination of power, reliability, and style. Invest in the S\u0026amp;S Cycle 310-1395 and experience superior performance on the road.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHigh-performance 129-inch engine package for increased power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHPT496 camshaft designed for enhanced horsepower and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChain drive system ensures reliable power transmission\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOil-cooled design maintains optimal operating temperatures\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish with highlights delivers an aggressive and stylish look\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with M8 engines for versatile installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed with durable, high-quality components for longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy to install, ideal for custom motorcycle upgrades\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883630928065,"sku":"0904-0181","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5687580.png?v=1767396089"},{"product_id":"s-s-cycle-129-power-package-hpt496-chain-drive-oil-cooled-m8-black-part-310-1394","title":"S\u0026S CYCLE 129\" Power Package HPT496 Chain Drive Oil Cooled M8 - Black (Part #310-1394)","description":"\u003cp\u003e129\" Power Package - HPT496 - Chain Drive - Oil Cooled - Black w\/o Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE 129-inch Power Package HPT496 is a high-performance engine kit designed for serious motorcycle enthusiasts seeking maximum power and reliability. Featuring a chain drive configuration, this package ensures efficient power transfer and durability for demanding riding conditions. The oil-cooled design provides superior thermal management, maintaining optimal engine temperatures during extended use, which enhances longevity and performance. The sleek black finish without highlights offers a professional appearance suitable for custom builds and street bikes alike.\u003c\/p\u003e\u003cp\u003eThis power package is built with precision engineering, incorporating the latest technology to deliver enhanced horsepower and torque. Its M8 mounting system ensures compatibility with a wide range of Harley-Davidson models, making it a versatile choice for custom bike builders and repair shops. The package's robust construction and oil cooling system reduce the risk of overheating, ensuring consistent performance even during prolonged rides or aggressive acceleration.\u003c\/p\u003e\u003cp\u003eDesigned for ease of installation, the S\u0026amp;S CYCLE 129\" Power Package is ideal for motorcycle enthusiasts looking to upgrade their engine with a reliable, high-powered solution. Whether you're building a custom show bike or seeking to improve your existing motorcycle's performance, this kit provides the quality and power you need to take your riding experience to the next level. Trust S\u0026amp;S CYCLE’s reputation for durability and innovation with this comprehensive power package that combines performance, reliability, and sleek aesthetics.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eEngine length: 129 inches for maximum power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eChain drive system for efficient power transmission\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOil-cooled design ensures consistent engine temperatures\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish with no highlights for a sleek appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with M8 Harley-Davidson models for versatile installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for durability and high-performance riding\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883630960833,"sku":"0904-0180","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5687579.png?v=1767396095"},{"product_id":"s-s-cycle-132-power-pack-kit-with-550-chain-drive-for-m8-engines-water-cooled-black-granite-finish-part-310-1235c","title":"S\u0026S Cycle 132\" Power Pack Kit with 550 Chain Drive for M8 Engines, Water Cooled, Black Granite Finish, Part #310-1235C","description":"\u003cp\u003e132\" Power Pack - 550 Chain Drive - Water Cooled - Black Granite w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle 132\" Power Pack Kit, designed to increase engine displacement from 114\"\/117\" to 132\" without requiring case machining. This bolt-in big-bore kit features precision-engineered components that deliver significant performance gains while maintaining ease of installation. The kit includes 4.32-inch bore cylinders with an 11.0:1 compression ratio forged pistons, optimized for high-performance applications. The water-cooled design, finished in striking black granite with highlight fins, ensures efficient heat dissipation and a robust aesthetic. \u003cbr\u003e The kit's advanced oil system enhancements include an S\u0026amp;S oil pump and cam plate with a blue anodized finish, removable passage plugs for servicing, and independent scavenge sections for the flywheel cavity and cam chest. Debris screens are integrated into both scavenge pickups, and a magnet in the cam chest helps prevent debris entry into the oil pump. Increased oil flow capacity on both feed and scavenge sides supports demanding riding conditions. \u003cbr\u003e For precise tuning, an adjustable pressure relief valve is included, allowing for fine adjustments with the unit installed. The package also features Quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum for durability. S\u0026amp;S 550 cams are specifically designed for big bore applications, providing excellent performance with valve springs compatible with lift up to 0.605 inches. The high-performance conical single-wire springs complement the cams, ensuring reliable operation. All necessary gaskets, bearings, and hardware are included, enabling straightforward bolt-on installation. Manufactured in the USA, this kit offers a reliable, high-performance upgrade for your M8 engine. Please note, this kit is not compatible with 121\" CVO models.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig-bore upgrade increases engine displacement from 114\"\/117\" to 132\" for M8 engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNo case machining required for installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes 4.32-inch bore cylinders with 11.0:1 compression ratio forged pistons\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWater-cooled design with black granite finish and highlight fins for heat dissipation and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil system with S\u0026amp;S oil pump, cam plate, removable passage plugs, and debris screens\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest with debris prevention features\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for precise oil pressure tuning\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and premium S\u0026amp;S tappets for reliable valvetrain operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack-coated, billet aluminum tappet cuffs for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for big bore applications with S\u0026amp;S 550 cams and compatible valve springs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single-wire valve springs supporting up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for straightforward installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA with quality craftsmanship\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883631452353,"sku":"0904-0168","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576076.png?v=1767396172"},{"product_id":"s-s-cycle-132-power-pack-for-m8-engines-with-550-chain-drive-oil-cooled-black-finish-part-310-1233c","title":"S\u0026S Cycle 132\" Power Pack for M8 Engines with 550 Chain Drive, Oil Cooled, Black Finish (Part #310-1233C)","description":"\u003cp\u003e132\" Power Pack - 550 Chain Drive - Oil Cooled - Black w\/o Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your M8 engine's performance with the S\u0026amp;S Cycle 132\" Power Pack, designed specifically for 114\" and 117\" models. This comprehensive bolt-in kit increases engine displacement from 114\/117 inches to 132 inches without requiring case machining, making installation straightforward for experienced mechanics and enthusiasts alike. The kit features 4.32-inch bore cylinders paired with forged pistons that achieve an 11.0:1 compression ratio, delivering increased power and torque. The included components, such as the oil pump and cam plate with a durable blue anodized finish, ensure optimal oil flow and engine longevity. Passage plugs are removable for easy servicing, and independent scavenge sections for the flywheel cavity and cam chest help maintain clean oil circulation. Both scavenge pickups are equipped with debris screens and a magnet in the cam chest to prevent debris from entering the oil pump, promoting reliable operation under demanding conditions. Increased oil flow capacity on both feed and scavenge sides enhances cooling and lubrication, supporting the engine's higher power output. The kit includes an adjustable pressure relief valve, allowing fine-tuning of oil pressure with the unit installed. Quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum contribute to smooth valve operation and durability. S\u0026amp;S 550 cams are tailored for big bore applications, compatible with valve springs up to 0.605 inches lift, and feature a high-performance conical single wire spring design. All necessary gaskets, bearings, and hardware are included for a bolt-on installation, making it a complete upgrade package. Made in the USA, this Power Pack is ideal for riders seeking significant performance gains. Note: Not suitable for 121-inch CVO models.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 114\/117 inches to 132 inches with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32-inch bore cylinders with forged pistons and 11.0:1 compression ratio for enhanced power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePassage plugs are removable for easy servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest ensure clean oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups prevent contaminants from entering the oil system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest to help prevent debris entry into the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on both feed and scavenge sides improves cooling and lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for precise oil pressure tuning\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets for reliable valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack anodized, billet aluminum tappet cuffs for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed specifically for big bore applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eValve springs compatible with cam lift up to 0.605 inches, featuring a high-performance conical spring design\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for straightforward bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA for quality assurance\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883631517889,"sku":"0904-0163","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576079.png?v=1767396179"},{"product_id":"s-s-cycle-132-power-pack-for-m8-engines-with-550-chain-drive-oil-cooled-black-granite-finish-part-number-310-1237c","title":"S\u0026S CYCLE 132\" Power Pack for M8 Engines with 550 Chain Drive, Oil Cooled, Black Granite Finish - Part Number 310-1237C","description":"\u003cp\u003e132\" Power Pack - 550 Chain Drive - Oil Cooled - Black Granite w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S CYCLE 132\" Power Pack, designed to deliver increased performance and reliability. This bolt-in kit transforms your 114\" or 117\" engine with a 4.5\" stroke to a powerful 132\" engine without the need for case machining. Featuring 4.32\" bore cylinders and forged pistons with an 11.0:1 compression ratio, this kit ensures robust power output and durability for demanding riding conditions. The included components, such as the heavy-duty S\u0026amp;S oil pump and cam plate finished in blue anodized aluminum, are engineered for optimal oil flow and engine longevity. Passage plugs are removable for easy servicing, and independent scavenge sections for the flywheel cavity and cam chest improve oil circulation, reducing wear and maintaining engine cleanliness. The debris screens in both scavenge pickups and the magnet in the cam chest work together to prevent debris from entering the oil pump, which enhances engine reliability. An adjustable pressure relief valve allows fine-tuning of oil pressure while the unit is installed, providing added control over engine operation. The kit includes Quickee pushrods, premium S\u0026amp;S tappets, and black coated, hard-anodized billet aluminum tappet cuffs, ensuring smooth valve operation. Designed around S\u0026amp;S 550 cams, which are optimized for big bore applications, the setup supports cams with up to 0.605\" lift and features high-performance conical wire valve springs to handle the increased lift with stability. All necessary gaskets, bearings, and hardware are included for a straightforward bolt-on installation. Made in the USA, this kit is built for serious performance but is not compatible with 121\" CVO models, making it ideal for custom or aftermarket builds that demand high power and durability.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine capacity from 114\"\/117\" to 132\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons with an 11.0:1 compression ratio for enhanced performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHeavy-duty S\u0026amp;S oil pump and cam plate with blue anodized finish for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs for easy servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest improve oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups prevent contaminants from entering the oil system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest reduces debris entry into the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on feed and scavenge sides increases engine cooling and longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for precise oil pressure management\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets ensure reliable valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack coated, hard-anodized billet aluminum tappet cuffs for added durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned around S\u0026amp;S 550 cams suitable for big bore applications with up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical wire valve springs support increased lift and rpm\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete with gaskets, bearings, and hardware for easy bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA for quality assurance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with 121\" CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883631648961,"sku":"0904-0162","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576074.png?v=1767396187"},{"product_id":"s-s-cycle-132-power-pack-with-550-gear-drive-for-m8-engines-black-granite-finish","title":"S\u0026S Cycle 132\" Power Pack with 550 Gear Drive for M8 Engines - Black Granite Finish","description":"\u003cp\u003e132\" Power Pack - 550 Gear Drive - Water Cooled - Black Granite w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your Harley-Davidson M8 engine with the S\u0026amp;S Cycle 132\" Power Pack, part number 310-1236C, designed for high-performance big-bore applications. This bolt-in kit seamlessly increases your engine capacity from 114\"\/117\" to 132\" without the need for case machining, making installation straightforward and efficient. The kit features 4.32\" bore cylinders paired with forged pistons that provide an 11.0:1 compression ratio, delivering enhanced power and torque. Additionally, the included components such as the S\u0026amp;S oil pump and cam plate, finished in a durable blue anodized coating, ensure reliable oil circulation and performance under demanding conditions. Passage plugs are removable for easy servicing, and the independent scavenge sections optimize oil flow from both the flywheel cavity and cam chest. A debris screen in each scavenge pickup helps prevent contaminants from entering the oil system, while the integrated magnet in the cam chest further guards against debris entering the oil pump. The kit also boasts increased oil flow capacity on both feed and scavenge sides, ensuring optimal lubrication during high-performance operation. An adjustable pressure relief valve allows fine-tuning of oil pressure without removing the unit from the engine. The package includes Quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum for durability. The S\u0026amp;S 550 cams, purpose-built for big bore setups, are compatible with valve springs that handle lifts up to 0.605\", utilizing a high-performance conical single wire spring design for reliability. All necessary gaskets, bearings, and hardware are included for a bolt-on installation, ensuring a complete upgrade. Made in the USA, this power pack is a robust choice for enthusiasts seeking increased horsepower, torque, and overall engine performance, excluding applications for 121\" CVO models.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 114\"\/117\" to 132\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32\" bore cylinders with forged pistons and 11.0:1 compression ratio for enhanced performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlue anodized S\u0026amp;S oil pump and cam plate for durability and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs facilitate easy servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections optimize oil flow from flywheel cavity and cam chest\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups prevent contaminants from entering the oil system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest helps prevent debris from entering the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on feed and scavenge sides for reliable lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows fine-tuning of oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets for reliable valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHard-anodized, black-coated billet aluminum tappet cuffs for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for big bore applications with S\u0026amp;S 550 cams compatible with up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire valve springs ensure reliable operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete hardware, gaskets, and bearings included for straightforward installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, delivering quality and performance\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883631911105,"sku":"0904-0160","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576073.png?v=1767396193"},{"product_id":"s-s-cycle-129-inch-power-pack-for-harley-m8-with-550-gear-drive-oil-cooled-wrinkle-black-part-number-310-1228c","title":"S\u0026S Cycle 129 Inch Power Pack for Harley M8 with 550 Gear Drive, Oil Cooled - Wrinkle Black (Part Number 310-1228C)","description":"\u003cp\u003e129\" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w\/o Highlight Fins - 107\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your Harley-Davidson M8 engine with the S\u0026amp;S Cycle 129 Inch Power Pack, featuring a 550 gear drive and oil-cooled design. This comprehensive bolt-on kit is engineered to increase the engine's displacement from 107 inches to 129 inches without requiring case machining, providing a straightforward upgrade for serious performance gains. The kit includes 4.32-inch bore cylinders with an 11.0:1 compression ratio forged pistons, delivering increased power and durability. The S\u0026amp;S oil pump and cam plate, finished in a sleek blue anodized coating, ensure efficient lubrication and reliable operation. Passage plugs are removable for easy servicing, and the independent scavenge sections for the flywheel cavity and cam chest improve oil flow and reduce potential clogging. Debris screens in both scavenge pickups and a magnet in the cam chest help prevent debris from entering critical oil passages, extending component life. The upgrade features increased oil flow capacity on both feed and scavenge sides for optimal lubrication under high-performance conditions. The adjustable pressure relief valve allows fine-tuning of oil pressure with the unit installed, ensuring optimal engine performance. The kit includes Quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum, reducing wear and enhancing longevity. Designed for big bore applications, the S\u0026amp;S 550 cams work seamlessly with valve springs up to 0.605 inches lift, utilizing a high-performance conical single wire spring design. All necessary gaskets, bearings, and hardware are included for a bolt-on installation, simplifying the upgrade process. Made in the USA, this power pack combines durability, performance, and ease of installation, making it an ideal choice for enthusiasts seeking increased horsepower and engine reliability in their Harley M8.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig-bore bolt-on kit increases engine displacement from 107\" to 129\" without case modification.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32-inch bore cylinders with 11.0:1 compression ratio forged pistons for enhanced power and durability.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for efficient lubrication and reliable operation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs allow for easy servicing and maintenance.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest improve oil flow and reduce debris buildup.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups and a magnet in the cam chest prevent debris from entering critical oil passages.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncreased oil flow capacity on feed and scavenge sides ensures optimal lubrication during high-performance operation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve permits fine-tuning of oil pressure with the unit installed in the engine.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated billet aluminum tappet cuffs enhance durability.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore applications, compatible with valve springs up to 0.605 inches lift.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire spring design for reliable valve operation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete with gaskets, bearings, and hardware for straightforward bolt-on installation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA with precision craftsmanship for durability and performance.\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883631943873,"sku":"0904-0157","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576077.png?v=1767396199"},{"product_id":"s-s-cycle-132-inch-power-pack-for-m8-engines-with-550-gear-drive-oil-cooled-black-finish","title":"S\u0026S Cycle 132 Inch Power Pack for M8 Engines with 550 Gear Drive - Oil Cooled Black Finish","description":"\u003cp\u003e132\" Power Pack - 550 Gear Drive - Oil Cooled - Black w\/o Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle 132 Inch Power Pack, designed specifically for 114\" and 117\" engine configurations. This comprehensive bolt-in kit increases engine displacement from 114\"\/117\" to 132\" without requiring case machining, providing a significant boost in power and performance. The kit features a 4.32\" bore cylinder set with forged pistons and an 11.0:1 compression ratio, ensuring durability and high performance under demanding conditions. The included S\u0026amp;S oil pump and cam plate with a sleek blue anodized finish enhance oil flow and engine longevity, while removable passage plugs facilitate routine servicing. Independent scavenge sections for the flywheel cavity and cam chest, along with debris screens in both pickups and a magnet in the cam chest, help prevent contaminants from entering critical oil passages, maintaining clean oil circulation. The increased oil flow capacity on both feed and scavenging sides further supports high-performance operation. The kit incorporates an adjustable pressure relief valve, allowing for precise oil pressure regulation when installed in the engine. Quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum contribute to reliable valvetrain operation. Designed for big bore applications, the S\u0026amp;S 550 cams work seamlessly with valve springs capable of up to 0.605\" lift, utilizing a high-performance conical single wire spring design. All necessary gaskets, bearings, and hardware are included for straightforward bolt-on installation. This product is proudly made in the USA and is not compatible with 121\" CVO models. Elevate your motorcycle's performance with this powerful, durable, and expertly engineered upgrade from S\u0026amp;S Cycle.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 114\"\/117\" to 132\" with bolt-in installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNo case machining required for installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32\" bore cylinders with forged pistons and 11.0:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for enhanced durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs facilitate servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups and a magnet in the cam chest help prevent debris entry\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on both feed and scavenge sides for optimal lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows precise oil pressure tuning with the unit installed\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets for reliable valvetrain operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack-coated, hard-anodized, billet aluminum tappet cuffs for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore applications, suitable for cams up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire valve springs support increased lift and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for easy bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, engineered for high performance and reliability\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883631976641,"sku":"0904-0155","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575788.png?v=1767396205"},{"product_id":"s-s-cycle-136","title":"S\u0026S Cycle 136 Big Bore Kit with Part Number 910-0848A for Harley-Davidson Engines","description":"\u003cp\u003eUpgrade your Harley-Davidson engine with the S\u0026amp;S Cycle 136 Big Bore Kit, Part No. 910-0848A, designed to enhance performance while maintaining stock specifications. Crafted specifically for Harley engines, this kit allows you to increase displacement to 136 cubic inches, providing more power and torque for your ride. It features MLS (Multi-Layered Steel) head gaskets for superior sealing and durability, ensuring reliable performance under demanding conditions. This kit retains the original engine serial numbers and maintains the stock engine height, making it an ideal choice for seamless upgrades without altering your engine's appearance or fit. The design includes a stock bolt pattern that works with the original crankcase, simplifying installation and ensuring compatibility with existing components. Please note, this kit is not compatible with VVT (Variable Valve Timing) models, so verify your engine type before purchase.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eIncreases engine displacement to 136 cubic inches for enhanced power and torque\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eIncludes MLS (Multi-Layered Steel) head gaskets for optimal sealing and longevity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eRetains original engine serial numbers for easy identification and documentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eMaintains stock engine height for seamless performance upgrades\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eCompatible with stock bolt pattern and works with original crankcase for straightforward installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\t\u003cli\u003eDesigned specifically for Harley-Davidson engines, excluding VVT models\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632009409,"sku":"0931-1209","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5602292.png?v=1767396212"},{"product_id":"s-s-cycle-136-cylinder-kit-with-4-625-stroke-wrinkle-black-finish-part-number-910-0849a","title":"S\u0026S CYCLE 136\" Cylinder Kit with 4.625\" Stroke – Wrinkle Black Finish, Part Number 910-0849A","description":"\u003cp\u003e136\" Cylinder Kit - 4.625\" Stroke - Wrinkle Black w\/o Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle engine with the S\u0026amp;S CYCLE 136\" Cylinder Kit, featuring a 4.625-inch stroke and a durable wrinkle black finish. This kit is designed to enhance performance while maintaining the stock engine height, ensuring a seamless fit in your existing setup. It includes MLS (Multi-Layered Steel) head gaskets that provide superior sealing and durability for high-performance applications. The kit retains the original engine serial numbers, making it suitable for legal and registration purposes, and it is compatible with stock bolt patterns and crankcases, simplifying installation. Please note that this kit is not compatible with VVT (Variable Valve Timing) models, so verify your engine specifications before purchasing.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOriginal engine serial numbers are retained for easy identification and registration.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS (Multi-Layered Steel) head gaskets for enhanced sealing and longevity.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaintains stock engine height for compatibility with existing components.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with stock bolt pattern and works with stock crankcase for straightforward installation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinished in wrinkle black with no highlighted fins for a sleek, aggressive look.\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632042177,"sku":"0931-1208","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5627639.png?v=1767396219"},{"product_id":"s-s-cycle-132-cylinder-kit-with-4-500-stroke-wrinkle-black-with-highlighted-fins-part-number-910-0845a","title":"S\u0026S CYCLE 132\" Cylinder Kit with 4.500\" Stroke - Wrinkle Black with Highlighted Fins - Part Number 910-0845A","description":"\u003cp\u003e132\" Cylinder Kit - 4.500\" Stroke - Wrinkle Black w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your engine with the S\u0026amp;S CYCLE 132\" Cylinder Kit, designed for optimal performance and durability. Featuring a 4.500-inch stroke, this kit is engineered to enhance power output while maintaining reliable operation. The kit includes high-quality MLS (Multi-Layered Steel) head gaskets, ensuring a secure seal and improved heat resistance. Its design retains stock engine height and bolt pattern, making installation straightforward without requiring modifications to your existing setup. Compatible with stock crankcases, this cylinder kit is ideal for builders seeking a seamless upgrade without VVT (Variable Valve Timing) integration, as it is not compatible with VVT models. The wrinkle black finish with highlighted fins provides a striking aesthetic, combining style with functional heat dissipation. With a weight of approximately 464 grams, this kit offers a balanced combination of strength and manageability for custom motorcycle builds.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eEngine Serial Number Retention: Ensures original serial numbers are preserved for documentation and compliance.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS Head Gaskets: Multi-Layered Steel gaskets provide superior sealing and heat resistance.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock Engine Height: Maintains original engine dimensions for seamless compatibility.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock Bolt Pattern: Ensures straightforward installation with existing mounting points.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Works with stock crankcases, ideal for OEM replacements and upgrades.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesign Limitation: Not compatible with VVT (Variable Valve Timing) models.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Wrinkle black with highlighted fins offers a durable, heat-dissipating surface.\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632074945,"sku":"0931-1206","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575657.png?v=1767396226"},{"product_id":"s-s-cycle-129-cylinder-kit-with-wrinkle-black-finish-and-highlighted-fins-part-number-910-0843a","title":"S\u0026S CYCLE 129\" Cylinder Kit with Wrinkle Black Finish and Highlighted Fins – Part Number 910-0843A","description":"\u003cp\u003e129\" Cylinder Kit - 4.375\" Stroke - Wrinkle Black w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle engine with the S\u0026amp;S CYCLE 129\" Cylinder Kit, designed for optimal performance and durability. Featuring a 4.375-inch stroke, this kit maintains your stock engine height and bolt pattern, ensuring a seamless fit with your existing setup. Constructed with high-quality materials, the kit incorporates MLS (Multi-Layered Steel) head gaskets for superior sealing and longevity. The wrinkle black finish with highlighted fins not only enhances the engine's appearance but also provides additional heat dissipation. This cylinder kit works perfectly with stock crankcases, making it an excellent choice for those looking to boost their engine's power without extensive modifications. Please note that this kit is not compatible with VVT models, so verify your motorcycle's specifications before installation. Whether you're building a high-performance custom or restoring a stock engine, this cylinder kit offers a reliable upgrade that combines style and functionality for a balanced riding experience.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOriginal engine serial numbers are retained for authenticity and traceability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS (Multi-Layered Steel) head gaskets for superior sealing and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaintains stock engine height for compatibility with existing components\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock bolt pattern ensures easy installation without modifications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWorks with stock crankcase for straightforward assembly\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with VVT models, please verify your motorcycle's specifications\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632107713,"sku":"0931-1205","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575656.png?v=1767396233"},{"product_id":"s-s-cycle-136-cylinder-kit-with-black-granite-finish-and-highlighted-fins-part-no-910-0850a","title":"S\u0026S CYCLE 136\" Cylinder Kit with Black Granite Finish and Highlighted Fins – Part No. 910-0850A","description":"\u003cp\u003e136\" Cylinder Kit - 4.625\" Stroke - Black Granite w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S CYCLE 136\" Cylinder Kit, part number 910-0850A, featuring a 4.625-inch stroke for enhanced power. This kit retains the original engine serial numbers and is designed with MLS (Multi-Layered Steel) head gaskets to ensure durability and reliable sealing under demanding conditions. The kit maintains stock engine height and bolt pattern, allowing for seamless installation with your existing components. It is compatible with stock crankcases, making it an ideal choice for riders seeking a straightforward upgrade without extensive modifications. Please note that this kit is not compatible with VVT (Variable Valve Timing) models, so verify your engine specifications before purchase.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eEngine serial numbers are retained for easy tracking and authenticity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS (Multi-Layered Steel) head gaskets for superior sealing and longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaintains stock engine height for compatibility and ease of installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock bolt pattern ensures straightforward fitment with existing parts\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWorks with stock crankcase for hassle-free upgrade\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with VVT (Variable Valve Timing) models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632173249,"sku":"0931-1203","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575654.png?v=1767396238"},{"product_id":"s-s-cycle-132-cylinder-kit-with-4-500-stroke-wrinkle-black-finish-m8-part-910-0846a","title":"S\u0026S CYCLE 132\" Cylinder Kit with 4.500\" Stroke - Wrinkle Black Finish - M8 - Part #910-0846A","description":"\u003cp\u003e132\" Cylinder Kit - 4.500\" Stroke - Wrinkle Black w\/o Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle engine with the S\u0026amp;S CYCLE 132\" Cylinder Kit, designed for optimal performance and durability. This kit features original engine serial number retention, ensuring compatibility with your existing engine setup. The MLS (Multi-Layered Steel) head gaskets provide superior sealing and longevity, helping maintain engine compression and prevent leaks. Its design retains the stock engine height and bolt pattern, making installation straightforward without the need for modifications. The kit works seamlessly with stock crankcases, allowing for a hassle-free upgrade process. Not compatible with VVT (Variable Valve Timing) models, so please verify your engine type before purchasing. Crafted with attention to detail, the kit includes components that ensure reliable operation under demanding conditions. The wrinkle black finish with highlighted fins offers an aggressive look while aiding in heat dissipation to keep your engine running cool. This cylinder kit is ideal for riders seeking increased displacement and power, delivering robust performance for custom builds or engine overhauls. Trust the quality and engineering of S\u0026amp;S CYCLE to enhance your motorcycle's engine with this high-performance cylinder kit.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOriginal engine serial numbers are retained for easy compatibility.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS (Multi-Layered Steel) head gaskets offer superior sealing and durability.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRetains stock engine height and bolt pattern for straightforward installation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWorks with stock crankcases for seamless integration.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with VVT models to ensure proper fit and function.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrinkle black finish with highlighted fins for an aggressive look and efficient heat dissipation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for increased displacement with reliable performance.\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632337089,"sku":"0931-1207","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5627640.png?v=1767396245"},{"product_id":"s-s-cycle-129-cylinder-kit-with-4-375-stroke-wrinkle-black-finish-part-910-0844a","title":"S\u0026S CYCLE 129\" Cylinder Kit with 4.375\" Stroke – Wrinkle Black Finish, Part #910-0844A","description":"\u003cp\u003e129\" Cylinder Kit - 4.375\" Stroke - Wrinkle Black w\/o Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle engine with the S\u0026amp;S CYCLE 129\" Cylinder Kit, designed for optimal performance and durability. This kit features a 4.375-inch stroke, providing increased power and torque for your ride. Crafted with precision, the kit maintains the original engine serial numbers, ensuring compatibility with your existing engine setup. The kit includes MLS (Multi-Layered Steel) head gaskets, which offer superior sealing capabilities and enhanced longevity under high-performance conditions. Designed to retain stock engine height and bolt pattern, this cylinder kit seamlessly integrates with your motorcycle's existing components, including compatibility with stock crankcases. Please note, this kit is not compatible with VVT models, so be sure to verify your engine type before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eOriginal engine serial numbers are retained for compatibility and tracking\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS (Multi-Layered Steel) head gaskets for superior sealing and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRetains stock engine height for seamless installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock bolt pattern for easy fitment with existing components\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWorks with stock crankcase, ensuring compatibility with original engine architecture\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with VVT models, verify your engine type before purchase\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632435393,"sku":"0931-1204","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575655.png?v=1767396253"},{"product_id":"s-s-cycle-132-cylinder-kit-with-4-500-stroke-black-granite-finish-with-highlighted-fins-part-910-0847a","title":"S\u0026S CYCLE 132\" Cylinder Kit with 4.500\" Stroke – Black Granite Finish with Highlighted Fins – Part #910-0847A","description":"\u003cp\u003e132\" Cylinder Kit - 4.500\" Stroke - Black Granite w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S CYCLE 132\" Cylinder Kit, designed for durability and high-performance riding. This kit features a 4.500-inch stroke, providing increased displacement for enhanced power and acceleration. The black granite finish with highlighted fins not only offers a striking aesthetic but also aids in heat dissipation, ensuring optimal engine operation during demanding rides. Crafted to retain original engine serial numbers, this kit maintains compatibility with your stock engine setup, making installation straightforward and efficient. It utilizes MLS (Multi-Layered Steel) head gaskets, which deliver superior sealing and longevity under high-pressure conditions. The kit preserves the stock bolt pattern and works seamlessly with the stock crankcase, making it suitable for a wide range of Harley-Davidson engines. Please note that this cylinder kit is not compatible with VVT (Variable Valve Timing) models, so verify your engine specifications before installation. Designed for performance enthusiasts, this cylinder kit from S\u0026amp;S CYCLE offers a reliable upgrade path for riders seeking increased power without sacrificing the integrity of their original engine components.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eEngine serial numbers are retained for easy identification and documentation.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMLS (Multi-Layered Steel) head gaskets provide superior sealing and durability.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaintains stock engine height for compatibility with existing motorcycle configurations.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStock bolt pattern ensures straightforward installation without modifications.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with stock crankcase, simplifying upgrade process.\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with VVT models, verify your engine specifications before installation.\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632566465,"sku":"0931-1202","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575653.png?v=1767396260"},{"product_id":"s-s-cycle-132-power-pack-for-m8-engines-550-chain-drive-water-cooled-wrinkle-black-with-highlight-fins","title":"S\u0026S Cycle 132\" Power Pack for M8 Engines - 550 Chain Drive, Water Cooled, Wrinkle Black with Highlight Fins","description":"\u003cp\u003e132\" Power Pack - 550 Chain Drive - Water Cooled - Wrinkle Black w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle 132\" Power Pack, designed for high-performance applications without the need for case machining. This bolt-in kit transforms 114\"\/117\" engines with a 4.5\" stroke into a robust 132\" powerhouse, providing increased displacement and horsepower. The kit features 4.32\" bore cylinders with an 11.0:1 compression ratio and forged pistons, delivering durability and efficiency for demanding riding conditions. \u003cbr\u003e The oil system is enhanced with an S\u0026amp;S oil pump and cam plate finished in blue anodized for corrosion resistance, along with removable passage plugs for easy servicing. Independent scavenge sections improve oil flow management between the flywheel cavity and cam chest, while debris screens in both pickups and a magnet in the cam chest help prevent contaminants from entering the oil pump, ensuring reliable lubrication. \u003cbr\u003e Increased oil flow capacity on both the feed and scavenge sides further supports engine longevity under high stress. The adjustable pressure relief valve allows fine-tuning of oil pressure with the unit installed, optimizing performance. The kit includes quickee pushrods, S\u0026amp;S premium tappets, and black-coated, billet aluminum tappet cuffs for durability and precise valve operation. S\u0026amp;S 550 cams are specifically designed for big bore setups, with valve springs capable of handling lift up to 0.605\" and featuring a high-performance conical single wire spring design. \u003cbr\u003e All necessary gaskets, bearings, and hardware are included for straightforward bolt-on installation. Made in the USA, this package is ideal for riders seeking significant power gains from their M8 engine, excluding 121\" CVO models. The stylish wrinkle black finish with highlight fins adds an aggressive aesthetic to your motorcycle while delivering professional-grade performance enhancements.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 114\"\/117\" to 132\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32\" bore cylinders with 11.0:1 compression ratio and forged pistons for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlue anodized S\u0026amp;S oil pump and cam plate for corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs for easy servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest improve oil flow\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in scavenge pickups and a magnet in the cam chest prevent contaminants from entering the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on feed and scavenge sides supports engine longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for optimized oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets for precise valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack coated, billet aluminum tappet cuffs for added durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore applications with valve springs up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire valve springs for reliable operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStylish wrinkle black finish with highlight fins for aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632599233,"sku":"0904-0169","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576082.png?v=1767396267"},{"product_id":"s-s-cycle-129-power-pack-for-m8-engines-550-chain-drive-oil-cooled-wrinkle-black-with-highlight-fins-part-number-310-1223c","title":"S\u0026S Cycle 129\" Power Pack for M8 Engines - 550 Chain Drive, Oil Cooled, Wrinkle Black with Highlight Fins, Part Number 310-1223C","description":"\u003cp\u003e129\" Power Pack - 550 Chain Drive - Oil Cooled - Wrinkle Black w\/Highlight Fins - 107\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle 129\" Power Pack, designed to boost performance without requiring case machining. This bolt-on kit increases the engine's displacement from 107 inches to 129 inches, providing significant power gains for street and performance enthusiasts. The kit features 4.32-inch bore cylinders equipped with forged pistons that have an 11.0:1 compression ratio, ensuring durability and high-performance operation. The combination of high-quality components and precise engineering delivers reliable power enhancement for your motorcycle. The oil system is optimized with an S\u0026amp;S oil pump and cam plate finished in a durable blue anodized coating, featuring removable passage plugs for straightforward servicing. Independent scavenge sections for the flywheel cavity and cam chest, along with debris screens in both pickups and a magnet in the cam chest, help prevent debris from contaminating the oil pump, thereby extending engine life. Enhanced oil flow capacity on both feed and scavenging sides ensures optimal lubrication under demanding conditions. The adjustable pressure relief valve allows fine-tuning of oil pressure with the engine in place, offering customization based on riding preferences. The kit includes quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum, contributing to durability and efficient valve operation. S\u0026amp;S 550 cams, specifically designed for big bore applications, provide a significant performance increase, compatible with valve springs supporting up to 0.605-inch lift. The high-performance conical single wire spring design ensures reliable valve control at high RPMs. Complete with all necessary gaskets, bearings, and hardware, this kit offers a straightforward bolt-on installation. Made in the USA, the S\u0026amp;S Cycle 129\" Power Pack combines premium components and engineering excellence to deliver increased power, reliability, and customizability for your M8 engine.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig-bore bolt-on kit increases 107\" M8 to 129\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32-inch bore cylinders with forged pistons and 11.0:1 compression ratio for enhanced performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for durability and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs in oil system for easy servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections and debris screens in pickups help prevent debris contamination\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest to reduce debris entering the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on both feed and scavenging sides for optimal lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for fine-tuning oil pressure during operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods, premium tappets, and black-coated billet aluminum tappet cuffs for reliability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore applications supporting up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire valve springs for dependable valve control\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete gaskets, bearings, and hardware included for easy bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA with high-quality materials and craftsmanship\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632632001,"sku":"0904-0167","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576081.png?v=1767396274"},{"product_id":"s-s-cycle-129-power-pack-for-m8-550-chain-drive-oil-cooled-wrinkle-black-finish-with-highlight-fins-part-310-1225c","title":"S\u0026S Cycle 129\" Power Pack for M8 - 550 Chain Drive, Oil Cooled, Wrinkle Black Finish with Highlight Fins (Part 310-1225C)","description":"\u003cp\u003e129\" Power Pack - 550 Chain Drive - Oil Cooled - Wrinkle Black w\/Highlight Fins - 107\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S Cycle 129\" Power Pack (Part 310-1225C) is a comprehensive upgrade kit designed to significantly enhance the performance of your 107\" M8 engine. This bolt-on kit increases engine displacement from 107 inches to 129 inches without the need for case machining, making installation straightforward for experienced mechanics and enthusiasts alike. The big-bore cylinders feature a 4.32-inch bore, paired with forged pistons and an 11.0:1 compression ratio, delivering increased power and efficiency. \u003cbr\u003e \u003cbr\u003e The kit includes a high-performance S\u0026amp;S oil pump and cam plate with a striking blue anodized finish, along with removable passage plugs for easy servicing. Independent scavenge sections for the flywheel cavity and cam chest ensure optimal oil flow and debris management. Debris screens are integrated into both scavenge pickups, while a magnet in the cam chest helps prevent debris from entering the oil pump, contributing to engine longevity. The oil system is further enhanced with increased flow capacity on both feed and scavenge sides, ensuring proper lubrication under demanding conditions. \u003cbr\u003e \u003cbr\u003e Adjustable pressure relief valve allows fine-tuning of oil pressure with the unit installed, providing flexibility for various riding styles and conditions. The kit also features Quickee pushrods, premium S\u0026amp;S tappets, and black-coated, hard-anodized tappet cuffs made from billet aluminum, offering durability and reduced maintenance. Designed to work with S\u0026amp;S 550 cams, which are optimized for big bore applications, the system supports cam lifts up to 0.605 inches and utilizes high-performance conical single wire valve springs compatible with these cams. \u003cbr\u003e \u003cbr\u003e All necessary gaskets, bearings, and hardware are included for a bolt-on installation, making it a complete upgrade solution. Crafted in the USA, the S\u0026amp;S Cycle 129\" Power Pack delivers reliable performance, enhanced power, and improved engine efficiency for your M8 motorcycle, making it an ideal choice for riders seeking a significant upgrade. \u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 107\" to 129\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes 4.32\" bore cylinders and forged pistons with 11.0:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for durability and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs facilitate servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest improve oil flow and debris removal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups prevent contaminants from entering the oil system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest helps prevent debris entry into the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on feed and scavenge sides for reliable lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows fine-tuning of oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and premium S\u0026amp;S tappets for improved valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack anodized, hard-coated tappet cuffs made of billet aluminum for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned to work with S\u0026amp;S 550 cams supporting up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUses high-performance conical single wire valve springs for consistent valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for a complete bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA for quality assurance and reliable performance\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632664769,"sku":"0904-0166","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576080.png?v=1767396280"},{"product_id":"s-s-cycle-132-power-pack-for-m8-engines-with-550-chain-drive-and-oil-cooled-system-wrinkle-black-finish-with-highlight-fins-part-310-1231c","title":"S\u0026S Cycle 132\" Power Pack for M8 Engines with 550 Chain Drive and Oil Cooled System - Wrinkle Black Finish with Highlight Fins, Part #310-1231C","description":"\u003cp\u003e132\" Power Pack - 550 Chain Drive - Oil Cooled - Wrinkle Black w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your M8 engine's performance with the S\u0026amp;S Cycle 132\" Power Pack, specifically designed for 114\" and 117\" models. This bolt-in kit increases engine displacement from 114\"\/117\" to 132\" without requiring case modifications, offering a straightforward upgrade for serious riders. The kit features a 4.32\" bore cylinder with forged pistons that achieve an 11.0:1 compression ratio, delivering increased power and efficiency. The included components are engineered for durability and high performance, ensuring your engine runs smoothly and reliably under demanding conditions.\u003cbr\u003eThe oil system is upgraded with S\u0026amp;S's premium oil pump and cam plate, finished in a durable blue anodized coating. Removable passage plugs facilitate maintenance and servicing, while independent scavenge sections for the flywheel cavity and cam chest optimize oil flow and filtration. Debris screens in both scavenge pickups and a magnet in the cam chest help prevent contaminants from entering critical oil passages, extending engine life. The oil system's capacity is increased on both the feed and scavenge sides, supporting higher engine outputs.\u003cbr\u003eThis kit includes adjustable pressure relief valves for fine-tuning oil pressure with the unit installed, along with Quickee pushrods and high-quality S\u0026amp;S premium tappets. Hard-anodized black-coated tappet cuffs made from billet aluminum provide durability and a sleek appearance. The S\u0026amp;S 550 cams are tailored for big bore applications, working seamlessly with valve springs designed for lifts up to 0.605\". These high-performance springs feature a conical single wire design, ensuring reliable valve operation at high RPMs.\u003cbr\u003eAll necessary gaskets, bearings, and hardware are included for a bolt-on installation, making this upgrade straightforward. Built in the USA, this power pack is designed for riders seeking maximum performance and durability, excluding 121\" CVO models. The wrinkle black finish with highlighted fins adds a striking visual appeal to your engine, complementing both custom and stock builds while providing reliable performance on the road.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBolt-in installation that requires no case machining\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 114\"\/117\" to 132\"\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32\" bore cylinders with forged pistons and 11.0:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes S\u0026amp;S oil pump and cam plate with blue anodized finish\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs for easy servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest to prevent debris entry\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on feed and scavenge sides\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for precise oil pressure control\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and premium S\u0026amp;S tappets\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHard-anodized black coated billet aluminum tappet cuffs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire valve springs suitable for lifts up to 0.605\"\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all necessary gaskets, bearings, and hardware for easy installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, designed for durability and performance\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632763073,"sku":"0904-0164","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575791.png?v=1767396286"},{"product_id":"s-s-cycle-132-power-pack-550-gear-drive-water-cooled-wrinkle-black-with-highlight-fins-for-m8-engines-part-number-310-1230c","title":"S\u0026S Cycle 132\" Power Pack - 550 Gear Drive - Water Cooled - Wrinkle Black with Highlight Fins for M8 Engines (Part Number 310-1230C)","description":"\u003cp\u003e132\" Power Pack - 550 Gear Drive - Water Cooled - Wrinkle Black w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your M8 engine with the S\u0026amp;S Cycle 132\" Power Pack, designed specifically for big bore applications without requiring case machining. This bolt-in kit transforms your 114\" or 117\" engine with a 4.5\" stroke to a powerful 132\" engine, providing increased displacement and performance. The kit features 4.32\" bore cylinders paired with high-strength forged pistons that deliver an 11.0:1 compression ratio, ensuring optimal power delivery and efficiency. The included S\u0026amp;S oil pump and cam plate, finished in blue anodized, offer reliable oil circulation, while removable passage plugs facilitate easy servicing. Independent scavenge sections for the flywheel cavity and cam chest, along with debris screens, help maintain engine cleanliness and longevity. A magnet in the cam chest prevents debris from entering the oil pump, further protecting engine components. The system supports increased oil flow capacity on both feed and scavenge sides, ensuring proper lubrication during high-performance operation. An adjustable pressure relief valve allows fine-tuning of oil pressure with the unit installed, providing customizable performance. The kit comes with Quickee pushrods, premium S\u0026amp;S tappets, and hard-anodized, black-coated billet aluminum tappet cuffs for durability and reliable operation. S\u0026amp;S 550 cams are tailored for big bore setups, compatible with valve springs up to 0.605\" lift, featuring a high-performance conical single wire spring design that optimizes airflow and power. All necessary gaskets, bearings, and hardware are included for straightforward bolt-on installation. Made in the USA, this kit is a robust upgrade for serious riders seeking increased horsepower and reliability. Note: Not compatible with 121\" CVO models.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig bore bolt-in kit increases engine displacement from 114\"\/117\" to 132\" without case machining\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes 4.32\" bore cylinders with forged pistons and 11.0:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for reliable oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs for easy servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections and debris screens for engine cleanliness\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest prevents debris from entering oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on both feed and scavenge sides ensures proper lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows fine-tuning of oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and premium S\u0026amp;S tappets for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack-coated, hard-anodized billet aluminum tappet cuffs for longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore applications, compatible with valve springs up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire spring design optimizes airflow and power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for easy bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, suitable for high-performance M8 applications\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632795841,"sku":"0904-0161","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575790.png?v=1767396294"},{"product_id":"s-s-cycle-129-power-pack-with-550-gear-drive-for-m8-engines-oil-cooled-wrinkle-black-finish","title":"S\u0026S Cycle 129\" Power Pack with 550 Gear Drive for M8 Engines - Oil Cooled, Wrinkle Black Finish","description":"\u003cp\u003e129\" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w\/Highlight Fins - 107\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your Harley-Davidson M8 engine with the S\u0026amp;S Cycle 129\" Power Pack, part number 310-1224C. This comprehensive bolt-on kit boosts your engine's displacement from 107 inches to 129 inches without requiring case machining, making installation straightforward for experienced enthusiasts and professional mechanics alike. Featuring precision-machined 4.32-inch bore cylinders and forged pistons with an 11.0:1 compression ratio, this kit enhances power output while maintaining reliability. The included S\u0026amp;S oil pump and cam plate, finished in a durable blue anodized coating, ensure optimal oil flow and engine longevity. Passage plugs are removable for easy servicing, and independent scavenge sections for the flywheel cavity and cam chest help maintain clean oil circulation, extending engine life.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig-bore bolt-on kit increases engine displacement from 107\" to 129\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32-inch bore cylinders with forged pistons and 11.0:1 compression ratio for improved performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for durability and efficient oil flow\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs facilitate easy servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest ensure clean oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups help prevent contaminants from entering the oil system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest reduces debris entry into the oil pump, enhancing reliability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncreased oil flow capacity on both feed and scavenge sides supports high-performance operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows fine-tuning of oil pressure without removing the kit\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets for precise valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack coated, hard-anodized billet aluminum tappet cuffs resist wear and corrosion\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed specifically for big bore applications, optimized for performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eValve springs compatible with cams up to 0.605-inch lift, featuring high-performance conical wire springs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAll necessary gaskets, bearings, and hardware included for a seamless bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA with high-quality craftsmanship and materials\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632861377,"sku":"0904-0159","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576078.png?v=1767396301"},{"product_id":"s-s-cycle-129-power-pack-for-m8-engines-with-550-gear-drive-oil-cooled-wrinkle-black-finish-part-no-310-1227c","title":"S\u0026S Cycle 129\" Power Pack for M8 Engines with 550 Gear Drive - Oil Cooled - Wrinkle Black Finish (Part No. 310-1227C)","description":"\u003cp\u003e129\" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w\/Highlight Fins - 107\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle 129\" Power Pack, designed for outstanding performance and reliable bolt-on installation. This kit increases your bike's displacement from 107 inches to 129 inches without requiring case modifications, making it an ideal choice for enthusiasts seeking a significant power boost with minimal downtime. The kit features 4.32-inch bore cylinders equipped with forged pistons and an 11.0:1 compression ratio, ensuring durability and high-performance output. \u003cbr\u003e \u003cbr\u003e The included S\u0026amp;S oil pump and cam plate come with a stylish blue anodized finish and are engineered with independent scavenge sections for the flywheel cavity and cam chest, enhancing oil flow and cooling efficiency. Passage plugs are removable for servicing, and debris screens are integrated into both scavenge pickups to prevent contaminants from entering the oil system. A magnet in the cam chest further helps in debris prevention, contributing to engine longevity. An adjustable pressure relief valve allows fine-tuning of oil pressure while the unit is installed, ensuring optimal lubrication under various operating conditions. \u003cbr\u003e \u003cbr\u003e This power pack includes Quickee pushrods and S\u0026amp;S premium tappets, along with hard-anodized, black-coated tappet cuffs made from billet aluminum for added durability. The S\u0026amp;S 550 cams are specifically designed for big bore applications and work seamlessly with valve springs supporting up to 0.605-inch lift, utilizing high-performance conical single-wire spring design to optimize valve control. All necessary gaskets, bearings, and hardware are included for an easy bolt-on installation. Built in the USA, this comprehensive kit offers a reliable upgrade path for serious riders looking to enhance their M8 engine's power and performance. \u003cbr\u003e \u003cbr\u003e Whether you’re building a high-performance cruiser or a custom project, the S\u0026amp;S Cycle 129\" Power Pack ensures quality, durability, and powerful results, making it a top choice for motorcycle enthusiasts and professional builders alike.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 107\" to 129\" with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.32-inch bore cylinders with forged pistons and 11.0:1 compression ratio\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for durability and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest enhance oil flow\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs for easy servicing and debris screens in scavenge pickups\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest helps prevent debris from entering the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on both feed and scavenge sides for reliable lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows fine-tuning of oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and premium S\u0026amp;S tappets for reliable operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHard-anodized, black-coated billet aluminum tappet cuffs for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed for big bore performance with valve springs supporting up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single-wire valve springs for optimal valve control\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all gaskets, bearings, and hardware for easy bolt-on installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA for quality and reliability\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632894145,"sku":"0904-0158","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576072.png?v=1767396308"},{"product_id":"s-s-cycle-132-power-pack-with-550-gear-drive-for-m8-engines-oil-cooled-wrinkle-black-finish","title":"S\u0026S Cycle 132\" Power Pack with 550 Gear Drive for M8 Engines - Oil Cooled, Wrinkle Black Finish","description":"\u003cp\u003e132\" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle 132\" Power Pack, designed to deliver increased power and performance without the need for case modifications. This bolt-in kit transforms your 114\" or 117\" engine with a 4.5\" stroke to a robust 132\" engine, featuring a 4.32\" bore and forged pistons with an 11.0:1 compression ratio for optimal combustion efficiency. The kit includes high-quality components like S\u0026amp;S oil pump and cam plate with a sleek blue anodized finish, along with removable passage plugs for straightforward servicing. The independent scavenge sections for the flywheel cavity and cam chest ensure efficient oil flow and debris management, aided by debris screens in both pickups and a magnet in the cam chest to prevent debris from entering the oil pump. \u003cbr\u003eEnhanced oil flow capacity on both feed and scavenge sides ensures reliable lubrication under demanding conditions, while the adjustable pressure relief valve allows tuning without removing the unit. The kit also features quickee pushrods, S\u0026amp;S premium tappets, and hard-anodized, black-coated tappet cuffs made from billet aluminum for durability. S\u0026amp;S 550 cams are specifically designed for big bore applications, compatible with valve springs up to 0.605\" lift, providing excellent valve control with high-performance conical springs. \u003cbr\u003eAll necessary gaskets, bearings, and hardware for a straightforward bolt-on installation are included, making this a comprehensive upgrade for serious riders seeking increased engine capacity and performance. Built in the USA, this kit is ideally suited for M8 engines but not compatible with 121\" CVO models. Enhance your motorcycle’s power output with confidence using the S\u0026amp;S Cycle 132\" Power Pack, engineered for durability and high performance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig-bore bolt-in kit increases engine displacement from 114\"\/117\" to 132\" without case machining\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons with 11.0:1 compression ratio for improved power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for durability and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs allow for easy servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest improve oil flow and debris management\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups prevent contaminants from entering the oil system\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest helps prevent debris from entering the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnhanced oil flow capacity on both feed and scavenge sides for reliable lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows tuning with the unit installed in the engine\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods and S\u0026amp;S premium tappets for optimal valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHard-anodized, black-coated tappet cuffs made of billet aluminum for longevity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 cams designed specifically for big bore applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eValve springs compatible with cams up to 0.605\" lift featuring high-performance conical spring design\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete set of gaskets, bearings, and hardware included for straightforward installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, engineered for durability and high performance\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632926913,"sku":"0904-0156","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5575789.png?v=1767396315"},{"product_id":"s-s-cycle-132-power-pack-kit-with-550-gear-drive-for-m8-engines-part-310-1238c","title":"S\u0026S Cycle 132\" Power Pack Kit with 550 Gear Drive for M8 Engines (Part #310-1238C)","description":"\u003cp\u003e132\" Power Pack - 550 Gear Drive - Oil Cooled - Black Granite w\/Highlight Fins - 114\"\/117\" M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your M8 engine's performance with the S\u0026amp;S Cycle 132\" Power Pack Kit, designed to increase engine displacement from 114\" or 117\" to 132\" without requiring case modifications. This bolt-in kit features a 4.5\" stroke M8 crankshaft and 4.32\" bore cylinders, combined with forged pistons that deliver an 11.0:1 compression ratio for optimal power output. The kit's precision components and engineering ensure a straightforward installation process, making it ideal for serious enthusiasts seeking significant performance upgrades.\u003cbr\u003eBuilt with durability and efficiency in mind, the kit includes an S\u0026amp;S oil pump and cam plate with a sleek blue anodized finish, along with removable passage plugs for ease of servicing. Independent scavenge sections for the flywheel cavity and cam chest, along with debris screens in both scavenge pickups, help maintain clean oil flow and protect vital engine parts. A magnet in the cam chest further prevents debris from entering the oil pump, enhancing engine longevity. Increased oil flow capacity on both feed and scavenge sides ensures proper lubrication under high-performance conditions.\u003cbr\u003eDesigned for reliability and adjustability, the kit features an adjustable pressure relief valve that can be fine-tuned with the unit installed. It also includes quickee pushrods, premium S\u0026amp;S tappets with hard-anodized, black-coated cuffs, and S\u0026amp;S 550 cams tailored for big bore applications. The high-performance conical single wire valve springs support cams up to 0.605\" lift, ensuring valve stability during aggressive operation. All necessary gaskets, bearings, and hardware are included for a seamless bolt-on installation. Made in the USA, this kit offers a robust upgrade for M8 engines, except for 121\" CVO models, delivering increased power and durability in a sleek black granite finish with highlight fins.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eIncreases engine displacement from 114\"\/117\" to 132\" with a bolt-in design\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons with 11.0:1 compression ratio for enhanced power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003es a 4.5\" stroke M8 crankshaft and 4.32\" bore cylinders\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S oil pump and cam plate with blue anodized finish for durability and style\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs facilitate easier servicing and maintenance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections for flywheel cavity and cam chest improve oil flow\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in both scavenge pickups protect against contaminants\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in cam chest prevents debris from entering the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncreased oil flow capacity on feed and scavenge sides enhances lubrication\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve allows fine-tuning of oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for reliable valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePremium S\u0026amp;S tappets with black-coated, hard-anodized cuffs for durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e550 gear drive cams designed specifically for big bore applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHigh-performance conical single wire valve springs support up to 0.605\" lift\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete with gaskets, bearings, and hardware for straightforward installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMade in the USA, built for long-lasting performance and reliability\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883632959681,"sku":"0904-0154","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5576071.png?v=1767396322"},{"product_id":"s-s-cycle-cylinder-kit-with-4-625-stroke-black-granite-with-highlights-m8-part-number-910-0764a","title":"S\u0026S CYCLE Cylinder Kit with 4.625\" Stroke - Black Granite with Highlights - M8, Part Number 910-0764A","description":"\u003cp\u003eCylinder Kit - 4.625\" Stroke - Black Granite w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S CYCLE Cylinder Kit featuring a 4.625-inch stroke, designed for optimal power and durability. Crafted with precision, this kit includes a cylinder with a 4.250-inch bore and an updated profile that aligns with the stock bolt pattern of 4.840 inches, ensuring a seamless fit for compatible models. Constructed by S\u0026amp;S CYCLE, a trusted brand in high-performance motorcycle components, this kit offers reliable quality for both daily riding and performance upgrades. The black granite finish with highlights adds a sleek aesthetic touch, complementing your bike’s style while providing corrosion resistance and easy maintenance. Please note, this kit is not suitable for 121-inch CVO models, so verify compatibility with your motorcycle before installation. Built with durability in mind, the components are designed to withstand demanding riding conditions, offering long-lasting performance and enhanced engine efficiency. Whether you're restoring a vintage bike or enhancing a custom build, this cylinder kit delivers the power, fitment, and visual appeal needed for a high-quality upgrade. Trust S\u0026amp;S CYCLE for innovative motorcycle parts that combine performance with style, making this cylinder kit a vital addition to your motorcycle's engine system.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBore: 4.250-inch diameter for optimal combustion efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStroke: 4.625 inches to increase engine power and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated profile with stock bolt pattern of 4.840 inches for easy installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Black granite with highlights for corrosion resistance and aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Designed for specific M8 models, not for 121-inch CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883633057985,"sku":"0931-1197","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5603067.png?v=1767396329"},{"product_id":"s-s-cycle-cylinder-kit-with-4-625-inch-stroke-for-m8-engines-wrinkle-black-with-highlights-part-number-910-0762a","title":"S\u0026S CYCLE Cylinder Kit with 4.625-Inch Stroke for M8 Engines - Wrinkle Black with Highlights, Part Number 910-0762A","description":"\u003cp\u003eCylinder Kit - 4.625\" Stroke - Wrinkle Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S CYCLE Cylinder Kit, featuring a 4.625-inch stroke for enhanced performance. Designed with a 4.250-inch bore, this kit offers a balanced combination of power and durability. The updated profile includes a stock bolt pattern measuring 4.840 inches, ensuring compatibility with a range of Harley-Davidson M8 models. Please note that this kit is not suitable for 121-inch CVO models, making it ideal for riders seeking reliable performance enhancements without modifications to their stock configurations.\u003cbr\u003eConstructed with precision, the S\u0026amp;S CYCLE Cylinder Kit boasts high-quality materials that withstand the rigors of daily riding and aggressive performance. The wrinkle black finish with highlighted accents provides an attractive aesthetic, complementing your bike's custom look. Installation of this cylinder kit is straightforward for experienced mechanics and enthusiasts familiar with Harley-Davidson engine upgrades, helping you achieve improved horsepower and torque.\u003cbr\u003eThis cylinder kit's design emphasizes durability and performance, making it suitable for both street and performance riding. The lightweight construction, weighing approximately 472.96 grams, contributes to the overall efficiency of your engine. Whether you're customizing a new build or upgrading an existing setup, the S\u0026amp;S CYCLE Cylinder Kit offers a reliable solution for enhancing your M8 engine's capabilities with a sleek, professional appearance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e4.250-inch bore for optimal performance and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated profile with stock bolt pattern measuring 4.840 inches for compatibility\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned specifically for M8 engines, excluding 121-inch CVO models\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e4.625-inch stroke for increased power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWrinkle black finish with highlighted accents for a stylish appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed with high-quality materials to endure daily use\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eLightweight design weighing approximately 472.96 grams\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883633090753,"sku":"0931-1196","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5580692.png?v=1767396335"},{"product_id":"s-s-cycle-cylinder-kit-4-500-stroke-with-wrinkle-black-finish-part-910-0685a","title":"S\u0026S CYCLE Cylinder Kit 4.500\" Stroke with Wrinkle Black Finish - Part 910-0685A","description":"\u003cp\u003eCylinder Kit - 4.500\" Stroke - Wrinkle Black w\/o Highlight - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE 910-0685A Cylinder Kit offers high-performance components designed for optimal engine performance. Featuring a 4.250-inch bore and a 4.500-inch stroke, this kit provides a balanced combination of power and durability for your motorcycle engine. The updated profile includes a stock bolt pattern measuring 4.840 inches, ensuring compatibility with a range of Harley-Davidson models. Please note that this kit is not suitable for 121-inch CVO models, making it essential to verify fitment before installation.\u003c\/p\u003e\u003cp\u003eConstructed with precision engineering, the cylinder kit is finished in a durable wrinkle black coating that resists heat and corrosion, maintaining an aggressive look over time. The design emphasizes performance and aesthetics, making it ideal for riders seeking reliable power upgrades. The kit's components are engineered to meet or exceed OEM standards, ensuring a seamless fit and long-lasting operation. Whether you're rebuilding an existing engine or building a custom setup, this cylinder kit provides the quality and performance expected from S\u0026amp;S CYCLE.\u003c\/p\u003e\u003cp\u003eInstallation of this cylinder kit can enhance your motorcycle’s horsepower and torque, delivering improved throttle response and overall engine efficiency. It is compatible with M8 engines and designed for ease of installation with factory bolt pattern alignment. Trust S\u0026amp;S CYCLE's reputation for quality and innovation to give your motorcycle the upgrade it deserves, backed by durable construction and precise engineering for a confident ride.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBore: 4.250 inches for optimal power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStroke: 4.500 inches for balanced performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated profile with stock bolt pattern measuring 4.840 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Wrinkle black coating for heat and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Designed for M8 engines, not suitable for 121-inch CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883633123521,"sku":"0931-1195","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5580690.png?v=1767396342"},{"product_id":"s-s-cycle-cylinder-kit-4-375-inch-stroke-wrinkle-black-with-m8-part-number-910-0681a","title":"S\u0026S CYCLE Cylinder Kit 4.375 inch Stroke - Wrinkle Black with M8 - Part Number 910-0681A","description":"\u003cp\u003eCylinder Kit - 4.375\" Stroke - Wrinkle Black w\/o Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's engine performance with the S\u0026amp;S CYCLE Cylinder Kit Part Number 910-0681A, designed for precise fit and reliable power. This kit features a 4.250-inch bore and a 4.375-inch stroke, delivering increased displacement and enhanced engine output. Crafted with durability in mind, the cylinder's updated profile includes a stock bolt pattern of 4.840 inches, ensuring compatibility with a wide range of Harley-Davidson models. Please note that this kit is not suitable for 121-inch CVO models, making it essential to verify your motorcycle specifications before installation. Constructed from high-quality materials, this kit provides excellent thermal stability and wear resistance for long-lasting performance. The wrinkle black finish not only adds an aggressive aesthetic but also helps resist corrosion, maintaining its appearance over time. Whether you're seeking to boost horsepower or improve overall engine efficiency, this cylinder kit is a reliable choice for serious enthusiasts and professional mechanics alike.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBore: 4.250 inches for increased displacement\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStroke: 4.375 inches for enhanced power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated profile with stock bolt pattern of 4.840 inches for compatibility\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Wrinkle black for corrosion resistance and aggressive look\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Not suitable for 121-inch CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883633156289,"sku":"0931-1194","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5580688.png?v=1767396348"},{"product_id":"s-s-cycle-cylinder-kit-4-500-stroke-with-wrinkle-black-finish-and-highlights-part-number-910-0684a","title":"S\u0026S CYCLE Cylinder Kit 4.500\" Stroke with Wrinkle Black Finish and Highlights - Part Number 910-0684A","description":"\u003cp\u003eCylinder Kit - 4.500\" Stroke - Wrinkle Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S CYCLE Cylinder Kit featuring a 4.500\" stroke, designed for optimal power and durability. This kit includes a 4.250\" bore with an updated profile that aligns with the stock bolt pattern of 4.840\", providing a precise fit for compatible engines. Crafted with high-quality materials, this cylinder kit is built to withstand the rigors of demanding riding conditions while offering a sleek wrinkle black finish accented with highlights for an enhanced aesthetic appeal. It is important to note that this kit is not suitable for 121\" CVO models, ensuring compatibility with a range of standard Harley-Davidson engines. Whether you're performing a rebuild or seeking to boost your bike's horsepower, this cylinder kit provides a reliable foundation for your performance upgrades. Installation requires standard tools and mechanical expertise, and proper tuning is recommended to maximize performance gains. Invest in the S\u0026amp;S CYCLE Cylinder Kit for a combination of reliable craftsmanship and aggressive styling that enhances both the look and performance of your motorcycle.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBore Size: 4.250\" with updated profile for precise fit\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStroke Length: 4.500\" for increased power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Wrinkle black with highlights for a stylish appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatibility: Designed for use with stock bolt pattern of 4.840\"\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNote: Not compatible with 121\" CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635515585,"sku":"0931-1193","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5580687.png?v=1767396355"},{"product_id":"s-s-cycle-cylinder-kit-with-4-500-stroke-black-granite-with-highlights-for-m8-910-0733a","title":"S\u0026S CYCLE Cylinder Kit with 4.500\" Stroke - Black Granite with Highlights for M8 910-0733A","description":"\u003cp\u003eCylinder Kit - 4.500\" Stroke - Black Granite w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle with the S\u0026amp;S CYCLE Cylinder Kit designed for M8 models, featuring a 4.500-inch stroke for enhanced performance. This kit is built with a 4.250-inch bore and an updated profile that includes the stock bolt pattern of 4.840 inches, ensuring compatibility with a wide range of setups. Please note, this cylinder kit is not compatible with 121-inch CVO models, so verify your bike specifications before installation.\u003cbr\u003eConstructed with precision and quality, the kit’s black granite finish with highlights provides a sleek, durable appearance that resists corrosion and wear. The robust design is engineered for longevity and reliable performance under demanding riding conditions, making it an ideal choice for enthusiasts seeking to improve engine power and efficiency.\u003cbr\u003eThe kit's components are engineered to fit seamlessly into M8 engines, offering a straightforward upgrade path for those looking to increase horsepower and torque. Whether you're customizing your motorcycle for better performance or restoration purposes, this cylinder kit delivers consistent results and a professional finish.\u003cbr\u003eEnhance your motorcycle’s engine with this high-performance cylinder kit from S\u0026amp;S CYCLE, a trusted name in motorcycle parts. The combination of quality materials and precise engineering ensures a reliable upgrade that will serve you well on long rides or competitive events, helping you get the most out of your machine.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003e4.250-inch bore for increased engine capacity\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated profile with stock bolt pattern of 4.840 inches for compatibility\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack granite finish with highlights for durability and aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned specifically for M8 models with 4.500-inch stroke\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with 121-inch CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635548353,"sku":"0931-1192","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5602766.png?v=1767396361"},{"product_id":"s-s-cycle-910-0625a-cylinder-kit-with-4-375-stroke-and-wrinkle-black-finish","title":"S\u0026S CYCLE 910-0625A Cylinder Kit with 4.375\" Stroke and Wrinkle Black Finish","description":"\u003cp\u003eCylinder Kit - 4.375\" Stroke - Wrinkle Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE 910-0625A Cylinder Kit is designed for high-performance motorcycle applications, offering a 4.250-inch bore and a 4.375-inch stroke for enhanced power and efficiency. Crafted with precision, this kit features a updated profile that aligns with the stock bolt pattern of 4.840 inches, ensuring a seamless fit for compatible models. Please note, this kit is not suitable for 121-inch CVO models, making it ideal for specific custom builds and performance upgrades. Constructed with durable materials, the cylinder kit provides reliable performance and longevity under demanding riding conditions. Its wrinkle black finish with highlights adds a sleek, aggressive aesthetic to your motorcycle engine, complementing various custom styling preferences.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBore Diameter: 4.250 inches for increased displacement and power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStroke: 4.375 inches to optimize engine performance and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated Profile: Compatible with stock bolt pattern of 4.840 inches for easy installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinish: Wrinkle black with highlights for a durable, stylish appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApplication Note: Not suitable for 121-inch CVO models, designed for specific performance upgrades\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635581121,"sku":"0931-1191","price":1643.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5580684.png?v=1767396367"},{"product_id":"s-s-cycle-132-high-compression-and-136-big-bore-kit-m8-part-910-0911a","title":"S\u0026S Cycle 132\" High Compression and 136\" Big Bore Kit - M8 Part 910-0911A","description":"\u003cp\u003e132\" High Compression | 136\" Big Bore Kit - 4.320\" Bore - Black Granite w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S Cycle 132\" High Compression Kit, designed for 114\" and 117\" motors equipped with 4-1\/2\" stroke flywheels. This kit features a 4.320\" bore and offers increased compression for enhanced power and efficiency. The black granite finish with highlighted fins provides a sleek, aggressive look that complements your engine's aesthetic. Constructed with precision and durability in mind, this high compression kit is ideal for riders seeking to improve throttle response and overall engine performance. Please note that to achieve a 136\" big bore capacity, a S\u0026amp;S flywheel with a 4-5\/8\" stroke is required, which is sold separately. Installing this kit involves careful attention to compatibility and may require professional expertise to ensure optimal results and engine longevity. Whether you're customizing for performance or style, this kit offers a reliable upgrade for your motorcycle's engine system. Enhance your riding experience with the proven quality of S\u0026amp;S Cycle parts, engineered for durability and high performance. Suitable for enthusiasts looking to push their motorcycle's capabilities while maintaining a high standard of quality and craftsmanship.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for 114\" and 117\" motors with 4-1\/2\" stroke flywheels\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a 4.320\" bore for increased compression and power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack granite finish with highlighted fins for a stylish appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with 136\" big bore upgrade using a 4-5\/8\" stroke flywheel (sold separately)\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision-engineered by S\u0026amp;S Cycle for durability and performance\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635646657,"sku":"0904-0153","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5584592.png?v=1767396373"},{"product_id":"s-s-cycle-132-high-compression-and-136-big-bore-kit-for-114-117-motors-part-910-0910a","title":"S\u0026S Cycle 132\" High Compression and 136\" Big Bore Kit for 114\"\/117\" Motors - Part 910-0910A","description":"\u003cp\u003e132\" High Compression | 136\" Big Bore Kit - 4.320\" Bore - Black w\/o Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S Cycle 132\" High Compression and 136\" Big Bore Kit, part number 910-0910A. Designed specifically for 114\" and 117\" motors equipped with 4-1\/2\" stroke flywheels, this kit enhances engine power and efficiency by increasing bore size and compression ratios. Crafted with precision, it features a durable black finish without highlighted fins, blending performance with a sleek look. The kit includes components that are engineered to fit seamlessly, ensuring a straightforward installation process. For those seeking to push their engine beyond 136\", a S\u0026amp;S flywheel with a 4-5\/8\" stroke is required and sold separately, allowing for customization based on your performance goals. This comprehensive upgrade is ideal for riders looking to maximize their motorcycle's horsepower and torque while maintaining reliability and quality that S\u0026amp;S Cycle is known for. Constructed with high-quality materials, the kit weighs approximately 480 grams, ensuring robust durability without adding unnecessary weight to your engine assembly. Whether for racing or everyday riding, this high compression and big bore kit provides the performance boost needed to elevate your motorcycle experience.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHigh compression kit designed for 114\" and 117\" motors with 4-1\/2\" stroke flywheels\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAllows for 136\" big bore upgrade with optional flywheel (sold separately)\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes precision-engineered components for seamless fit and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish with a sleek, non-highlighted fin design for a clean look\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed with durable materials weighing approximately 480 grams\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635679425,"sku":"0904-0152","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5584596.png?v=1767396381"},{"product_id":"s-s-cycle-132-high-compression-and-136-big-bore-kit-for-114-117-motors-4-320-bore-black-with-highlighted-fins-part-910-0909a","title":"S\u0026S CYCLE 132\" High Compression and 136\" Big Bore Kit for 114\"\/117\" Motors - 4.320\" Bore, Black with Highlighted Fins, Part #910-0909A","description":"\u003cp\u003e132\" High Compression | 136\" Big Bore Kit - 4.320\" Bore - Black w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE 132\" High Compression Kit is designed to enhance the performance of 114\" and 117\" motors, utilizing a 4-1\/2\" stroke flywheel for optimal fit and function. This high-performance kit offers increased compression to improve power output and throttle response, making it ideal for riders seeking a significant upgrade to their engine's capabilities. Crafted with precision, the kit includes a 4.320\" bore cylinder that ensures a reliable and durable upgrade for compatible Harley-Davidson engines. The black finish with highlighted fins not only provides a striking aesthetic but also aids in heat dissipation to maintain optimal operating temperatures during demanding rides.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHigh compression design for increased horsepower and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with 114\" and 117\" motors using 4-1\/2\" stroke flywheels\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a 4.320\" bore cylinder with black finish and highlighted fins for heat dissipation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed by S\u0026amp;S CYCLE, a trusted brand in performance engine components\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRequires S\u0026amp;S flywheel with 4-5\/8\" stroke to achieve 136\" big bore (sold separately)\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635712193,"sku":"0904-0151","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5584593.png?v=1767396387"},{"product_id":"s-s-cycle-132-high-compression-and-136-big-bore-kit-with-4-320-bore-black-granite-finish-part-910-1010a","title":"S\u0026S Cycle 132\" High Compression and 136\" Big Bore Kit with 4.320\" Bore - Black Granite Finish, Part #910-1010A","description":"\u003cp\u003e132\" High Compression | 136\" Big Bore Kit - 4.320\" Bore - Black Granite w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S Cycle 132\" high compression kit, designed specifically for 114\" and 117\" motors equipped with 4-1\/2\" stroke flywheels. This high-performance kit provides increased power and efficiency, making it ideal for riders seeking a significant boost in engine output.\u003c\/p\u003e\u003cp\u003eConstructed with precision, the kit features a durable black granite finish with highlighted fins, offering both aesthetic appeal and heat dissipation. The kit's components are engineered to fit seamlessly onto compatible engines, ensuring a straightforward installation process. For those aiming to achieve a 136\" big bore configuration, the kit is compatible with S\u0026amp;S flywheels that have a 4-5\/8\" stroke, which are sold separately, enabling customization according to your performance goals.\u003c\/p\u003e\u003cp\u003eDesigned for serious performance enthusiasts, this high compression kit enhances combustion efficiency and overall engine responsiveness. Its robust construction and tailored specifications ensure longevity and reliable operation under demanding riding conditions. Whether you're upgrading for increased horsepower or improved torque, this kit offers a reliable and effective solution to elevate your motorcycle's capabilities.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eCompatible with 114\" and 117\" motors equipped with 4-1\/2\" stroke flywheels\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eProvides 132\" high compression performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a 4.320\" bore for optimal power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAllows for a 136\" big bore upgrade with optional S\u0026amp;S flywheels (sold separately)\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFinished in durable black granite with highlighted fins for heat dissipation and aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883635744961,"sku":"0904-0150","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5584611.png?v=1767396394"},{"product_id":"s-s-cycle-132-high-compression-and-136-big-bore-kit-part-no-910-1009a","title":"S\u0026S Cycle 132\" High Compression and 136\" Big Bore Kit - Part No. 910-1009A","description":"\u003cp\u003e132\" High Compression | 136\" Big Bore Kit - 4.320\" Bore - Black w\/o Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your motorcycle's performance with the S\u0026amp;S Cycle 132\" High Compression kit, designed specifically for 114\" and 117\" motors equipped with 4-1\/2\" stroke flywheels. This high-performance kit features a 4.320\" bore and is finished in sleek black without highlighted fins, providing both durability and a clean aesthetic. The kit enhances engine efficiency and power output, making it an ideal choice for riders seeking to increase their bike's performance without extensive modifications.\u003c\/p\u003e\u003cp\u003eTo achieve a larger displacement of 136\", you'll need to pair this kit with an S\u0026amp;S flywheel featuring a 4-5\/8\" stroke, which is sold separately. The combination allows for a significant boost in engine capacity, resulting in increased torque and horsepower. The installation is straightforward for experienced mechanics, and the kit is engineered to fit seamlessly onto compatible engines, ensuring reliable operation and long-lasting performance.\u003c\/p\u003e\u003cp\u003eConstructed with precision and quality materials, this kit offers robust build quality and is designed for high compression applications. Whether you're looking to improve acceleration, top-end power, or overall engine responsiveness, the S\u0026amp;S Cycle 132\" High Compression and 136\" Big Bore Kit provides a reliable upgrade path for your motorcycle. Enhance your riding experience with this professional-grade upgrade that balances performance and durability.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDesigned for 114\"\/117\" motors with 4-1\/2\" stroke flywheels\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAllows for a 132\" high compression engine upgrade\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEnables a 136\" big bore configuration when paired with a 4-5\/8\" stroke flywheel (sold separately)\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003es a 4.320\" bore for increased displacement\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSleek black finish without highlighted fins for a clean look\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eConstructed with high-quality materials for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEasy to install for experienced technicians\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638071489,"sku":"0904-0149","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5584599.png?v=1767396401"},{"product_id":"s-s-cycle-132-high-compression-and-136-big-bore-kit-for-114-117-motors-part-910-1008a","title":"S\u0026S Cycle 132\" High Compression and 136\" Big Bore Kit for 114\"\/117\" Motors - Part #910-1008A","description":"\u003cp\u003e132\" High Compression | 136\" Big Bore Kit - 4.320\" Bore - Black w\/Highlighted Fins - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your engine's performance with the S\u0026amp;S Cycle 132\" high compression kit, designed specifically for 114\" and 117\" motors equipped with 4-1\/2\" stroke flywheels. Crafted to enhance power output and efficiency, this kit features a 4.320\" bore diameter and a striking black finish with highlighted fins for a durable and stylish appearance. The high compression ratio increases horsepower and torque, providing a more responsive and aggressive ride. Installation requires compatible flywheels, and for those seeking a larger displacement, a 136\" big bore can be achieved using an S\u0026amp;S flywheel with a 4-5\/8\" stroke, sold separately. This kit's design ensures a precise fit and optimal performance, making it an excellent choice for enthusiasts aiming to maximize their engine's potential.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eHigh compression kit designed for 114\" and 117\" motors with 4-1\/2\" stroke flywheels\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes a 4.320\" bore for increased engine displacement\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack finish with highlighted fins for durability and aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with 136\" big bore upgrade using an S\u0026amp;S flywheel with 4-5\/8\" stroke (sold separately)\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngineered for improved horsepower, torque, and overall engine responsiveness\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638104257,"sku":"0904-0148","price":1849.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5584610.png?v=1767396407"},{"product_id":"s-s-cycle-power-pack-for-m8-310-1051c-4-375-inch-stroke-water-cooled-performance-upgrade","title":"S\u0026S CYCLE Power Pack for M8 310-1051C - 4.375-Inch Stroke Water-Cooled Performance Upgrade","description":"\u003cp\u003ePower Pack - 4.375\" Stroke - Water Cooled - Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S CYCLE Power Pack (Part Number: 310-1051C) is a comprehensive bolt-on kit designed for optimal performance on M8 engines. Featuring a 4.375-inch stroke, this kit includes forged pistons and a high-performance camshaft, specifically the 550 cam, to enhance engine power and efficiency. Crafted in the USA, the kit requires no case machining, allowing for straightforward installation. The kit also includes an oil pump and cam plate, which are precision machined from billet aluminum, ensuring durability and precision fit. Passage plugs are removable for servicing, and debris screens are integrated into both scavenge pickups, with a magnet in the camchest to prevent debris from entering the oil pump. The oil supply side experiences a 44% increase in flow, while the scavenge side sees a 58% flow increase, contributing to improved oil circulation and engine cooling. The pressure relief valve is adjustable once the kit is installed, providing tunability for specific engine needs. Quickee pushrods included in the kit are designed for rapid installation and optimal valve operation. Tappets are hand-assembled to exact tolerances, reducing valve train noise from startup to shutdown and ensuring low leak-down rates for better sealing and efficiency. Tappet cuffs are billet aluminum with a hard anodized black coating, providing stability at high lift and high RPM conditions. This Power Pack is ideal for enthusiasts seeking a reliable, high-performance upgrade that combines increased power, durability, and ease of installation, all wrapped in a sleek black finish with highlights for a stylish appearance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBolt-on installation with no case machining required for quick setup\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForged pistons and a 550 camshaft for enhanced power output\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision machined billet aluminum oil pump and cam plate with removable passage plugs for servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens and a magnet in the camchest to prevent contamination and protect the oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFlow increase: 44% on supply side and 58% on scavenge side for improved oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for tuning engine performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for fast installation and reliable valve operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHand-assembled tappets with tight tolerances reduce valve train noise\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBillet aluminum tappet cuffs with black hard anodized coating for high lift and RPM stability\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638137025,"sku":"0904-0147","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574504.png?v=1767396414"},{"product_id":"s-s-cycle-power-pack-4-375-inch-stroke-water-cooled-for-m8-engines-part-no-310-1050c","title":"S\u0026S CYCLE Power Pack - 4.375-Inch Stroke Water Cooled for M8 Engines (Part No. 310-1050C)","description":"\u003cp\u003ePower Pack - 4.375\" Stroke - Water Cooled - Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S CYCLE Power Pack, designed for enhanced performance and durability. This bolt-on kit features an array of premium components including forged pistons and a high-performance camshaft, providing a significant boost in power output. The kit is crafted in the USA and requires no case machining, simplifying installation while ensuring a precise fit. Included are an oil pump and cam plate, pushrods, tappets, and tappet cuffs, all engineered for optimal operation and longevity.\u003c\/p\u003e\u003cp\u003eThe oil pump and cam plate are precision machined from billet aluminum, with removable passage plugs for straightforward servicing. Independent scavenge sections improve oil flow efficiency, with debris screens in both pickups and a magnet in the camchest to prevent debris from reaching the oil pump. These features contribute to a 44% increase in supply side flow and a 58% increase on the scavenge side, promoting better lubrication and engine longevity. The pressure relief valve is adjustable with the unit installed, allowing fine-tuning of oil pressure for various operating conditions.\u003c\/p\u003e\u003cp\u003ePushrods are Quickee style, offering quick installation and reliable performance, while the hand-assembled tappets are built to exacting tolerances to reduce valve train noise from startup to shutdown. Close tolerances ensure low leak-down rates, enhancing efficiency. Tappet cuffs are billet aluminum with a hard anodized black coating, providing added stability during high lift and high RPM situations. This comprehensive Power Pack assembly delivers robust performance, improved oil flow, and reliable operation, making it an excellent upgrade for enthusiasts seeking to maximize their M8 engine's capabilities.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBolt-on kit with no case machining required for easy installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons and a 550 camshaft for increased power\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision-machined billet aluminum oil pump and cam plate with removable passage plugs for servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections with debris screens and a magnet in the camchest for debris management\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSignificant oil flow increase: 44% on the supply side and 58% on the scavenge side\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for customizable oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for quick installation and reliable performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHand-assembled tappets with low leak-down rates and noise reduction\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBillet aluminum tappet cuffs with hard anodized black coating for high lift and high RPM stability\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638202561,"sku":"0904-0146","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574503.png?v=1767396420"},{"product_id":"s-s-cycle-power-pack-for-m8-with-4-375-inch-stroke-water-cooled-black-finish-part-no-310-1054c","title":"S\u0026S Cycle Power Pack for M8 with 4.375-Inch Stroke - Water Cooled Black Finish (Part No. 310-1054C)","description":"\u003cp\u003ePower Pack - 4.375\" Stroke - Water Cooled - Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 engine with the S\u0026amp;S Cycle Power Pack, designed for optimal performance and durability. This bolt-on kit features a 4.375-inch stroke with water cooling, ensuring efficient thermal management during high-performance riding conditions. Crafted from high-quality materials, it includes forged pistons that provide superior strength and longevity, making it an excellent choice for demanding applications. The kit requires no case machining, simplifying installation while maintaining precise alignment and fitment. It also includes an oil pump and cam plate with removable passage plugs for easy servicing, along with independent scavenge sections that improve oil flow and debris management. The debris screens in both scavenge pickups and a magnet in the camchest help prevent debris from reaching critical components, enhancing engine reliability. The design offers a 44% increase in supply side oil flow and a 58% increase on the scavenge side, promoting better lubrication and cooling during intense operation. An adjustable pressure relief valve allows fine-tuning of oil pressure once installed in the engine. The kit also includes Quickee pushrods for quick installation and precise valve train control. Hand-assembled tappets with tight tolerances reduce valve train noise from startup to shutdown and minimize leak-down rates, ensuring consistent engine performance. The hard anodized black-coated billet aluminum tappet cuffs provide high stability in high lift and high rpm situations, maintaining durability and performance. This comprehensive upgrade package is made in the USA, combining advanced engineering with reliable manufacturing, to deliver a significant boost in power and engine efficiency for your M8 motorcycle.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBolt-on kit with no case machining required for effortless installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons for increased strength and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOil pump and cam plate with removable passage plugs for easy servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections improve oil flow and debris removal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens in pickups and a magnet in camchest prevent debris entry\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003e44% increase in supply side oil flow and 58% increase on scavenge side\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for precise oil pressure control\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for simplified installation and reliable operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHand-assembled tappets with tight tolerances for low leak-down and noise reduction\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBillet aluminum tappet cuffs with hard anodized black coating ensure stability at high lift and RPM\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638235329,"sku":"0904-0145","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574502.png?v=1767396427"},{"product_id":"s-s-cycle-power-pack-4-500-stroke-big-bore-kit-for-m8-engines-114-to-128-water-cooled-performance-upgrade","title":"S\u0026S Cycle Power Pack 4.500\" Stroke Big Bore Kit for M8 Engines - 114\" to 128\" Water-Cooled Performance Upgrade","description":"\u003cp\u003ePower Pack - 4.500\" Stroke - Water Cooled - Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your Harley-Davidson M8 engine with the S\u0026amp;S Cycle Power Pack 4.500\" stroke big bore kit, designed for models ranging from 114\" to 128\". This bolt-in kit offers a straightforward installation process with no case machining required, making it an ideal choice for riders seeking increased power and performance. Crafted with forged pistons, the kit ensures durability and reliability for high-performance applications. Included components such as the oil pump, cam plate, pushrods with chrome covers, tappets, tappet cuffs, S\u0026amp;S 550 camshaft, and valve springs provide a comprehensive upgrade for your engine's internals. Please note that this kit is not compatible with 121\" CVO models, ensuring proper fitment for your specific Harley setup. The kit's black with highlights finish adds a sleek, aggressive look to your engine while delivering boosted horsepower and torque. Whether you're upgrading for street performance or custom builds, this power pack offers a significant improvement in engine output and overall riding experience. Proper installation and tuning are recommended to maximize the benefits of this performance upgrade. Empower your motorcycle with this high-quality S\u0026amp;S Cycle kit and enjoy a noticeable increase in power with reliable, forged construction and premium components.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig bore kit suitable for 114\" to 128\" Harley M8 engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBolt-in installation with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComprehensive kit with oil pump and cam plate included\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePushrods with chrome covers, tappets, and tappet cuffs for smooth operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 camshaft designed for optimal power gains\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eValve springs included to support high-performance camshaft\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWater-cooled design with black finish and highlights for a sleek appearance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with 121\" CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638300865,"sku":"0904-0144","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574501.png?v=1767396434"},{"product_id":"s-s-cycle-power-pack-4-500-stroke-big-bore-kit-for-m8-engines-114-to-128-with-water-cooling-black-granite-finish","title":"S\u0026S CYCLE Power Pack 4.500\" Stroke Big Bore Kit for M8 Engines - 114\" to 128\" with Water Cooling, Black Granite Finish","description":"\u003cp\u003ePower Pack - 4.500\" Stroke - Water Cooled - Black Granite w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your M8 motorcycle with the S\u0026amp;S CYCLE Power Pack 310-1108C, a high-performance big bore kit designed to enhance power and durability. This bolt-in kit fits 114\" to 128\" engine sizes, including 114\" and 117\" CVO models, providing a seamless installation that requires no case machining. Crafted with forged pistons, it ensures strength and longevity under demanding riding conditions. The kit includes an oil pump and cam plate for optimal lubrication and timing, pushrods with chrome covers for a polished appearance, as well as tappets, tappet cuffs, and valve springs to support increased airflow and performance. The S\u0026amp;S 550 camshaft is engineered to maximize horsepower and torque, delivering a noticeable boost in engine response. Built for water-cooled M8 engines, this kit features a striking Black Granite finish with highlights, combining aesthetic appeal with rugged durability. Note that this kit is not compatible with 121\" CVO models, making it essential to verify your engine specifications before installation. Whether you're aiming for enhanced street performance or improved touring capabilities, this Power Pack offers a reliable upgrade that can transform your riding experience.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig bore kit designed for 114\" to 128\" M8 engines, including 114\" and 117\" CVO models\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBolt-in installation requires no case machining, simplifying the upgrade process\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForged pistons for increased strength and durability under high-performance conditions\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes oil pump and cam plate for comprehensive lubrication and timing management\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePushrods with chrome covers for improved aesthetics and corrosion resistance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSupportive components such as tappets, tappet cuffs, and valve springs to enhance airflow and engine efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eS\u0026amp;S 550 camshaft optimized for increased horsepower and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned for water-cooled M8 engines with a stylish Black Granite finish and highlights\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNot compatible with 121\" CVO models\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638333633,"sku":"0904-0143","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574500.png?v=1767396442"},{"product_id":"s-s-cycle-power-pack-4-500-stroke-big-bore-kit-for-m8-engines-114-to-128-displacement","title":"S\u0026S Cycle Power Pack 4.500\" Stroke Big Bore Kit for M8 Engines – 114\" to 128\" Displacement","description":"\u003cp\u003ePower Pack - 4.500\" Stroke - Water Cooled - Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your Harley-Davidson M8 engine with the S\u0026amp;S Cycle Power Pack 4.500\" Stroke Big Bore Kit, part number 310-1101C. Designed for models with 114\" and 117\" CVO, this bolt-in kit offers a significant increase in engine displacement up to 128\" without requiring case machining. Crafted with forged pistons, the kit ensures durability and high performance for aggressive riding or customized builds. It includes a comprehensive set of components such as an oil pump and cam plate, pushrods with chrome covers, tappets, tappet cuffs, a high-performance S\u0026amp;S 550 camshaft, and valve springs, all engineered for optimal power output and reliability. Please note that this kit is not compatible with 121\" CVO models, making it suitable for most other M8-powered Harley-Davidson bikes seeking an upgrade in power and efficiency. The package's robust construction and precision engineering ensure seamless installation and long-lasting performance. Elevate your motorcycle's capabilities with this professionally designed big bore kit, providing a combination of enhanced horsepower, torque, and overall engine responsiveness. The black finish with highlights adds a sleek aesthetic touch, complementing your bike's custom look while delivering top-tier performance. Trust S\u0026amp;S Cycle's proven quality and engineering expertise to transform your riding experience with this high-performance big bore upgrade.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig bore kit suitable for 114\" to 128\" engine displacement\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBolt-in installation requiring no case machining\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComprehensive components: oil pump, cam plate, pushrods with chrome covers, tappets, tappet cuffs, valve springs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003es S\u0026amp;S 550 camshaft for increased power and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eWater-cooled design with aesthetic black finish and highlights\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638366401,"sku":"0904-0142","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574499.png?v=1767396449"},{"product_id":"s-s-cycle-power-pack-4-500-stroke-big-bore-kit-for-m8-engines-part-310-1107c","title":"S\u0026S Cycle Power Pack 4.500\" Stroke Big Bore Kit for M8 Engines (Part #310-1107C)","description":"\u003cp\u003ePower Pack - 4.500\" Stroke - Water Cooled - Black Granite w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your Harley-Davidson M8 engine with the S\u0026amp;S Cycle Power Pack 4.500\" stroke big bore kit, designed for models from 114\" to 128\". This bolt-in kit offers a straightforward upgrade without requiring case machining, making it ideal for experienced mechanics and enthusiasts seeking reliable performance improvements. The kit includes high-quality forged pistons that provide strength and durability under demanding conditions, ensuring long-lasting performance. It also features an oil pump and cam plate for smooth operation, along with pushrods with chrome covers, tappets, and tappet cuffs to support efficient valve actuation. The included S\u0026amp;S 550 camshaft delivers a significant increase in horsepower and torque, enhancing overall engine responsiveness and power output. Valve springs are also included to support high-lift cam profiles, ensuring consistent valve control and engine performance. Please note that this kit is not compatible with 121\" CVO models, so verify your specifications before installation. The Power Pack 310-1107C features a stylish Black Granite finish with highlights, complementing the aesthetic of modern Harley-Davidson motorcycles. Designed for ease of installation, this kit is an excellent choice for riders looking to boost their bike’s power with minimal downtime, offering a substantial upgrade in performance and reliability. Whether upgrading for daily riding or performance competitions, this big bore kit provides the quality and confidence associated with S\u0026amp;S Cycle products, ensuring your motorcycle performs at its peak. With its comprehensive components and precise engineering, the Power Pack is a reliable solution for maximizing your M8 engine’s potential. Get ready to experience improved acceleration, throttle response, and overall engine efficiency with this high-performance upgrade kit.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBig bore kit compatible with 114\" to 128\" Harley-Davidson M8 engines\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBolt-in design requires no case machining for easy installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes forged pistons for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eContains oil pump and cam plate for smooth operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePushrods with chrome covers, tappets, and tappet cuffs included\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSupplies S\u0026amp;S 550 camshaft for increased horsepower and torque\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eValve springs included to support high-lift cam profiles\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eStylish Black Granite finish with highlights for aesthetic appeal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesigned specifically for M8 models, excluding 121\" CVO versions\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638399169,"sku":"0904-0141","price":3294.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574498.png?v=1767396456"},{"product_id":"s-s-cycle-power-pack-for-m8-with-4-375-inch-stroke-oil-cooled-black-finish-part-310-1053c","title":"S\u0026S Cycle Power Pack for M8 with 4.375-Inch Stroke - Oil Cooled Black Finish - Part #310-1053C","description":"\u003cp\u003ePower Pack - 4.375\" Stroke - Oil Cooled - Black w\/o Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eThe S\u0026amp;S Cycle Power Pack with a 4.375-inch stroke is a high-performance upgrade designed for M8 engines, offering enhanced power and durability. Crafted with precision and made in the USA, this bolt-on kit requires no case machining, making installation straightforward for experienced builders. It includes forged pistons, an oil pump, cam plate, pushrods, tappets, and tappet cuffs, all engineered for optimal performance and longevity. The kit features updated fins for improved cooling and a custom camshaft with valve springs to maximize airflow and combustion efficiency. The included oil pump and cam plate are precision machined from billet aluminum, with removable passage plugs for easy servicing and debris screens in both scavenge pickups to protect vital engine components. An integrated magnet in the camchest helps prevent debris from entering the oil pump, ensuring clean oil flow and extended engine life. The supply side sees a 44% flow increase, while the scavenge side benefits from a 58% flow increase, promoting better oil circulation and cooling. An adjustable pressure relief valve allows fine-tuning of oil pressure once installed, providing optimal lubrication under various operating conditions. The Quickee pushrods are designed for quick installation and reduced valve train noise from startup to shutdown. Tappets are hand-assembled with tight tolerances for low leak-down rates, contributing to efficient valve operation. The billet aluminum tappet cuffs are hard anodized in black for durability and stability during high lift and high RPM scenarios. Overall, this Power Pack is engineered to deliver significant power gains, improved engine reliability, and easier maintenance, making it an excellent choice for performance-minded Harley-Davidson M8 owners seeking a reliable upgrade.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBolt-on installation with no case machining required\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated fins for improved cooling\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForged pistons for strength and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes oil pump and cam plate for comprehensive upgrade\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision machined billet aluminum oil pump and cam plate with removable passage plugs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections with debris screens for enhanced oil cleanliness\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMagnet in camchest to prevent debris entry into oil pump\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFlow increase of 44% on supply side and 58% on scavenge side for superior oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for customized oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for easy installation and reduced valve train noise\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHand-assembled tappets with tight tolerances for low leak-down rates\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBillet aluminum tappet cuffs with hard anodized black finish for stability in high lift and RPM conditions\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638431937,"sku":"0904-0140","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574497.png?v=1767396463"},{"product_id":"s-s-cycle-power-pack-for-m8-engines-4-375-inch-stroke-oil-cooled-kit-part-310-1058c","title":"S\u0026S CYCLE Power Pack for M8 Engines - 4.375-inch Stroke Oil Cooled Kit (Part #310-1058C)","description":"\u003cp\u003ePower Pack - 4.375\" Stroke - Oil Cooled - Black w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eEnhance your M8 engine's performance with the S\u0026amp;S CYCLE Power Pack, designed for optimal power output and durability. This bolt-on kit features updated fins for improved cooling efficiency and does not require case machining, simplifying installation. Crafted from forged pistons, the components ensure strength and longevity while maintaining precise tolerances for reliable operation. The kit includes an oil pump and cam plate, pushrods, tappets, and tappet cuffs, all engineered for high-performance applications. The oil pump and cam plate are precision machined from billet aluminum, with removable passage plugs for easy servicing and independent scavenge sections that improve oil flow and filtration. Debris screens in both scavenge pickups and a magnet in the camchest help prevent debris from entering the oil pump, contributing to engine longevity. The design delivers a 44% increase in supply side flow and a 58% increase on the scavenge side, promoting superior lubrication and cooling. An adjustable pressure relief valve allows fine-tuning of oil pressure once installed in the engine. The quickee pushrods are designed for rapid installation and adjustment. Hand-assembled tappets with close tolerances reduce valve train noise from start-up to shut-down and ensure low leak-down rates for consistent performance. The billet aluminum tappet cuffs feature a hard anodized black coating for durability and stability during high-lift and high-RPM conditions. Overall, the S\u0026amp;S Power Pack kit offers a comprehensive upgrade for M8 engines, combining increased flow, improved cooling, and reliable valve train components for high-performance riding and racing applications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eUpdated fins for improved cooling efficiency\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eNo case machining required for straightforward installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForged pistons for enhanced strength and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes oil pump and cam plate, precision machined from billet aluminum\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRemovable passage plugs facilitate servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections improve oil flow and filtration\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDebris screens and magnet in camchest prevent debris entry\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSignificant flow increase: 44% supply side, 58% scavenge side\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for customized oil pressure\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for easy installation and adjustments\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHand-assembled tappets with tight tolerances reduce valve train noise\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eBlack anodized billet aluminum tappet cuffs ensure stability in high-lift, high-RPM conditions\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638497473,"sku":"0904-0139","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574496.png?v=1767396469"},{"product_id":"s-s-cycle-power-pack-for-m8-4-375-stroke-oil-cooled-with-black-granite-finish-part-no-310-1059c","title":"S\u0026S CYCLE Power Pack for M8 4.375\" Stroke - Oil Cooled with Black Granite Finish (Part No. 310-1059C)","description":"\u003cp\u003ePower Pack - 4.375\" Stroke - Oil Cooled - Black Granite w\/Highlights - M8\n\u003cbr\u003e\u003c\/p\u003e\u003cp\u003eUpgrade your Harley M8 engine with the S\u0026amp;S CYCLE Power Pack, part number 310-1059C, designed for optimal performance and durability. This bolt-on kit features a 4.375-inch stroke and is oil cooled, ensuring efficient heat management during high-performance riding. The kit includes a precision-machined oil pump and cam plate made from billet aluminum, with removable passage plugs for easy servicing and maintenance. The independent scavenge sections for the flywheel cavity and camchest, along with debris screens and a debris-stopping magnet, help keep oil clean and free of contaminants, promoting engine longevity.\u003cbr\u003eEnhanced flow rates are a key feature of this power pack, with a 44% increase on the supply side and a 58% increase on the scavenge side, resulting in improved oil circulation and engine efficiency. The pressure relief valve is adjustable when installed, allowing for custom tuning based on your riding needs. The kit also includes Quickee pushrods for precise valvetrain operation, and hand-assembled tappets with tight tolerances reduce valve train noise from start-up to shut-down, ensuring a quieter, smoother ride.\u003cbr\u003eTappet cuffs are hard anodized black and constructed from billet aluminum, providing stability at high lift and high RPM conditions. These components work together to deliver a high-performance upgrade that enhances power, reliability, and engine responsiveness. Whether you're building a custom cruiser or a high-performance motorcycle, the S\u0026amp;S Power Pack offers a comprehensive solution for serious riders seeking superior engine performance and durability.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBolt-on kit designed for easy installation without case machining\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUpdated fins for improved heat dissipation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eForged pistons for increased strength and durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes oil pump and cam plate with removable passage plugs for servicing\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePrecision-machined billet aluminum oil pump and cam plate\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIndependent scavenge sections with debris screens and debris magnet\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFlow increase: 44% on supply side, 58% on scavenge side for better oil circulation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eAdjustable pressure relief valve for custom tuning\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuickee pushrods for precise valvetrain operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eHand-assembled tappets with tight tolerances for reduced noise\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eTappet cuffs: hard anodized black, billet aluminum construction for stability at high lift and RPM\u003c\/li\u003e\u003c\/ul\u003e","brand":"S\u0026S CYCLE","offers":[{"title":"Default Title","offer_id":49883638563009,"sku":"0904-0138","price":3497.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0060\/5929\/4802\/files\/5574495.png?v=1767396476"}],"url":"https:\/\/teamdreamrides.com\/collections\/big-bore-kits.oembed?page=3","provider":"Team Dream Rides","version":"1.0","type":"link"}