S&S 910-1008A 132 / 136 4.320" Big bore kit for 114 /117 Harley M8
132" High Compression | 136" Big Bore Kit - 4.320" Bore - Black with Highlighted Fins - M8
The biggest Big Bore possible with a slip in kit! The S&S 4.320" bore cylinder kit takes your M8 114" to 132" & 117" to 139"
- 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
