S&S Cycle – Black 4.375″ Stroke 129″ Big Bore Cylinder & Piston Kit fits ’17 & Up M8 Engines
S&S Cycle’s Big Bore Cylinder & Piston Kit delivers a mighty bore increase (4.320″) that, in turn, delivers a huge power increase! It is compatible with stock crankcases, which means you won’t have to do any machine work. The kit features MLS (multi-layered steel) head gaskets and is built with pride in the U.S.A.
Features
- Retains stock engine height
- Includes cubic inch cam cover badge
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