The biggest Big Bore possible with a slip on kit!
The S&S 4.320" bore cylinder kits will take an M8 107" to 129" and an M8 114" or 117" to 132".
- Huge bore increase means huge power increase
- 11:1 Compression ratio
- 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