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About S&S Cycle Bolt-In Sidewinder 4in. Big Bore Kit
S&S Cycle Bolt-In Sidewinder 4in. Big Bore Kit
- Bolt in - no machining, balancing, or splitting the crankcases; install can be performed with engine still in frame
- Cast Ductile Iron Sleeve in cast aluminum for superior heat transfer
- 88in. engines are boosted to 100in.
- 96in. and 103in. engines are boosted to 110in.
- 10. 5:1 compression (w/ stock 85cc heads) makes for a very streetable and dependable engine that also responds well to performance cams
- Complete kits include cylinders, forged pistons, rings, piston pins, clips and gaskets
- Available with wrinkle black or silver powdercoat finish cylinders
- NOTE: Not for use with S&S 79cc heads.
Warning: California Proposition 65