Description
If you’re running high-rpm applications or building a bulletproof Harley-Davidson Twin Cam engine, stock flywheels are your weak link. S&S Cycle’s 3-piece flywheel assembly eliminates the failure point with a rigid, domestically-manufactured design that handles extreme loads without compromise. Built for serious riders and builders who demand reliability under sustained performance conditions.
- 4140 steel construction
- 3-piece design integral shaft
- 1.671″ crankpin diameter
- Timken bearing compatible
- Stock crankcases fit direct
- No modifications required
- U.S.A. manufactured
- MPN 320-0397







