S&S CYCLE 4" Big Bore Bolt-In Sidewinder? Cylinder Kit - 100" - Silver 910-0642 Tires Cylinder Kit - 100" -

Cylinder Kit - 100" - Silver

Crankcase venting can be achieved via two crankcase breathers

Four fuel delivery ports for better fuel flow

Has 2-1/16" throat at the butterfly and a 1-3/4" venturi

S&S CYCLE 4" Big Bore Bolt-In Sidewinder? Cylinder Kit - 100" - Silver 910-0642 Tires Cylinder Kit - 100" -4" Big Bore Bolt In Sidewinder? Cylinder Kit 100" Silver 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, 88" engines are boosted to 100", 96" and 103" engines are boosted 110", 10. 5: 1 compression (w stock 85cc heads) makes for a very streetable and dependable engine that also responds well to performance cams,