Description
The S&S Cycle Big Bore cylinder kit delivers measurable displacement gains without the complexity of case splitting or cylinder boring. If you’re running stock heads and want straightforward bolt-on performance, this kit eliminates custom fabrication while maintaining reliability. Swap cylinders, verify clearances, and unlock genuine horsepower and torque improvements.
- MPN: 910-0474
- Manufacturer: S&S Cycle
- Application: Twin Cam engines
- Big Bore displacement kit
- Compatible with stock heads
- No case splitting required
- Aluminum with cast-in iron liners
- Includes pistons, rings, gaskets
- Head, base, exhaust gaskets
- Black or silver powder-coat
- Made in the U.S.A.
- Requires skilled technician installation
- Verify all clearances before assembly









