The biggest Big Bore possible with a slip in kit! These S&S cylinder and piston kits takes your 107" M8 to 129" and the 114" to 132".
- Huge bore increase means huge power increase
- Works with stock crankcases (no machine work)
- Powder coat finish matches factory finish,
- MLS (multi-layered steel) head gaskets
- 4.320" Bore
- Retains stock engine height
- Includes Cubic Inch Cam Cover Badge
- Made in USA