S&S Cycle 2017+ M8 Models 129in Big-Bore Kit 4.375in Stroke Highlighted Cylinders
S&S Cycle
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
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Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
Liquid error (snippets/product-quick-buy line 5): invalid url input
Please be advised that no returns, cancellations, or refunds allowed on Special Orders once it has been placed on order regardless of the circumstances.
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"
- Works with stock crankcases (no machine work)
- Huge bore increase means huge power increase
- Powder coat finish matches factory finish
- MLS (multi-layered steel) head gaskets
- Includes Cubic Inch Cam Cover Badge
- Retains stock engine height
- 4.320" Bore
- Made in USA
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