S&S Cycle 128" Power Performance Kit with Gear Drive - Part 310-1102A

Product type: Big Bore Kits

SKU : 0904-0066

Regular price $3,460.95 USD

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128" Power Package Engine Performance Kit - Gear Drive Upgrade your Big Twin engine with the S&S Cycle 128" Power Performance Kit,...

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128" Power Package Engine Performance Kit - Gear Drive

Upgrade your Big Twin engine with the S&S Cycle 128" Power Performance Kit, part number 310-1102A, designed to deliver significant power gains and enhanced reliability. This comprehensive bolt-on kit is compatible with 114" and 117" engines with a 4-1/2" stroke and requires no case machining, making installation straightforward for experienced mechanics. The kit features 4-1/4" bore cylinders paired with 11:1 forged pistons, providing increased displacement and compression for improved horsepower and torque.
Included in this performance package is an S&S oil pump and cam plate with a striking blue anodized finish, ensuring durability and corrosion resistance. Passage plugs are removable for maintenance and servicing, and the design incorporates independent scavenge sections for the flywheel cavity and cam chest, optimizing oil flow and filtration. Both scavenge pickups are equipped with debris screens, and a magnet in the cam chest helps prevent debris from entering the oil pump, contributing to engine longevity.
The kit offers increased oil flow capacity on both the feed and scavenge sides, supporting high-performance operation under demanding conditions. An adjustable pressure relief valve allows fine-tuning of oil pressure while the engine is assembled, ensuring optimal lubrication. The Quickee pushrods, chrome pushrod tubes, and premium S&S tappets enhance valve train stability and durability, especially in high-rpm and high-lift scenarios. The included S&S 550 cams are specifically designed for big bore applications, providing aggressive power delivery, while the high-performance conical single-wire valve springs accommodate cams up to .605" lift.
This package also includes all necessary gaskets, bearings, and hardware for a seamless bolt-on installation. Made in the USA, the S&S Power Package Engine Performance Kit ensures quality, reliability, and increased engine performance for serious riders seeking maximum power output and long-lasting durability in their V-twin motorcycles.

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