Description
The S&S Cycle Sidewinder Kit delivers the displacement and compression ratio serious Harley builders demand when pursuing maximum output from their platform. This is a complete engine rebuild solution—not a simple bolt-on—engineered for riders committed to extracting genuine performance gains through proper machine work and assembly. If you’re planning a custom build that requires professional-grade internals and measurable horsepower increases, this kit provides the precision components to get there.
- 3-5/8″ bore cylinders
- 9.75:1 compression pistons
- Complete ring and gasket set
- Standard flywheel assembly included
- Fits 1991-1999 Harley models
- Requires case boring operations
- Crankcase clearancing needed
- 77-89 pinion and oil pump gears required
- Professional installation recommended
- MPN: 917660
