Description
If you’re running an M8 and serious about maximizing displacement without case work, the S&S Cycle Power Pack Twin Cooled delivers genuine horsepower gains through a bolt-on big bore kit engineered for reliability at high RPM. The 4.250″ bore, forged pistons, and purpose-built cam work together to increase combustion efficiency while the dual oil cooling system keeps bearing temperatures in check during sustained performance. This is a complete top-end solution designed by racers for racers who demand both power and longevity.
- Bolt-on installation
- No case machining required
- 4.250″ bore diameter
- Forged pistons
- 11.1:1 compression ratio
- Billet aluminum oil pump/cam plate
- Independent scavenge sections
- Debris screens, both pickups
- Magnetic cam chest protection
- Increased flow capacity
- Adjustable pressure relief valve
- S&S Quickee pushrods
- S&S premium tappets
- Billet aluminum tappet cuffs
- S&S 550 cam included
- Fits Harley M8 models
- MPN: 310-1107B
