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S&S Cycle 129" Power Pack with 550 Gear Drive for M8 Engines - Oil Cooled, Wrinkle Black Finish
Regular price $3,497.95 USD
129" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w/Highlight Fins - 107" M8 Upgrade your Harley-Davidson M8...
Lease for as low as $/week
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129" Power Pack - 550 Gear Drive - Oil Cooled - Wrinkle Black w/Highlight Fins - 107" M8
Upgrade your Harley-Davidson M8 engine with the S&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&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.
Features:
- Big-bore bolt-on kit increases engine displacement from 107" to 129" with no case machining required
- 4.32-inch bore cylinders with forged pistons and 11.0:1 compression ratio for improved performance
- S&S oil pump and cam plate with blue anodized finish for durability and efficient oil flow
- Removable passage plugs facilitate easy servicing and maintenance
- Independent scavenge sections for flywheel cavity and cam chest ensure clean oil circulation
- Debris screens in both scavenge pickups help prevent contaminants from entering the oil system
- Magnet in cam chest reduces debris entry into the oil pump, enhancing reliability
- Increased oil flow capacity on both feed and scavenge sides supports high-performance operation
- Adjustable pressure relief valve allows fine-tuning of oil pressure without removing the kit
- Quickee pushrods and S&S premium tappets for precise valve operation
- Black coated, hard-anodized billet aluminum tappet cuffs resist wear and corrosion
- S&S 550 cams designed specifically for big bore applications, optimized for performance
- Valve springs compatible with cams up to 0.605-inch lift, featuring high-performance conical wire springs
- All necessary gaskets, bearings, and hardware included for a seamless bolt-on installation
- Made in the USA with high-quality craftsmanship and materials
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