Description
The S&S Cycle Power Pack delivers the displacement and reliability you need to dominate on the track or the street. This 114″ to 128″ big bore kit combines precision-engineered internals with a purpose-built oil cooling system that keeps temperatures in check under sustained high-rpm operation. When you’re pushing peak horsepower, you need components built to survive—this is it.
Big Bore Kit & Engine Block
- 4.250″ bore diameter
- 114″ to 128″ displacement range
- Forged piston construction
- 11.1:1 compression ratio
- No case machining required
- Black Granite finish
- Highlighted fin styling
Oil Pump & Cam Plate
- Billet aluminum construction
- Precision CNC-machined
- Blue anodized finish
- Independent scavenge sections
- Increased flow capacity
- Adjustable pressure relief valve
- Adjustable with engine installed
- Debris screens on pickups
- Magnetic cam chest insert
- Removable passage plugs
Pushrods & Tappets
- S&S Quickee pushrods
- Chrome pushrod tubes
- Precision S&S tappets
- Billet aluminum cuffs
- Hard anodized black coating
Fitment: M8 Harley-Davidson models
