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S&S Cycle 128" Power Package Engine Performance Kit - Chain Drive 310-1107B
Regular price $3,109.95 USD
Category:
128" Power Package Engine Performance Kit - Chain Drive
Upgrade your Big Twin engine with the S&S Cycle 128" Power Package Engine Performance Kit, part number 310-1107B. Designed for 114"/117" engines with a 4-1/2" stroke on the M-Eight platform, this bolt-on kit offers a straightforward installation without the need for case modifications. The kit features 4-1/4" bore cylinders paired with 11:1 forged pistons, providing significant power gains and improved performance for high-performance applications. The included S&S oil pump and cam plate with a blue anodized finish ensure reliable oil flow and durability under demanding conditions.
Features:
- Big-bore bolt-on kit increases engine displacement to 128" with no case machining required
- Includes 4-1/4" bore cylinders with 11:1 forged pistons for increased power
- S&S oil pump and cam plate with blue anodized finish for durability and style
- Removable passage plugs simplify servicing and maintenance
- Independent scavenge sections improve oil circulation in flywheel cavity and cam chest
- Debris screens in scavenge pickups prevent contaminants from reaching critical components
- Magnet in cam chest helps prevent debris from entering the oil pump
- Increased oil flow capacity on feed and scavenge sides enhances lubrication
- Adjustable pressure relief valve allows fine-tuning of oil pressure
- Quickee chrome pushrods and premium S&S tappets improve valve train stability
- Black-coated billet aluminum tappet cuffs designed for high-lift and high-rpm stability
- S&S 550 cams optimized for big bore performance
- High-performance conical single-wire valve springs work with cams up to .605" lift
- Includes all gaskets, bearings, and hardware for bolt-on installation
- Made in the U.S.A.





