Description
If you’re running a Big Twin and want meaningful displacement gains without a complete engine rebuild, the S&S CYCLE 92-1402 piston kit delivers a straightforward path to 1250cc power. By increasing swept volume from your stock 883cc or 1200cc engine, you’ll gain torque and horsepower while maintaining reliability with a sensible 10.3:1 compression ratio. These cast flat-top pistons are engineered for longevity in both street and mild performance applications, and they integrate seamlessly with stock or S&S performance cylinder heads.
- Displacement: 1250cc upgrade
- Compression ratio: 10.3:1
- Piston design: Cast flat-top
- Bore diameter: 3-9/16″
- Compatible: 1984–’99 HD Big Twins
- Stock heads: Supported
- S&S ported heads: Recommended
- Installation: Cylinder boring required
- 1986–’2003 883cc cylinders: Boreable
- 2004–’16 883cc cylinders: Not compatible
- Stock 1200cc cylinders: Boreable
- Material: Cast iron construction
- Part number: 92-1402
