S&S CYCLE 4" Big Bore Bolt-In Sidewinder? Cylinder Kit - 100" - Silver 910-0642 Tires Four fuel delivery ports for

Four fuel delivery ports for better fuel flow

Mk45 4-1/2" Touring Mufflers are the result of decades of riding

Black Edition includes all the features of standard S&S engines

3500-6000 rpm for 88" to 103" engines and 2500-5500 rpm for larger engines

Crankcase venting can be achieved via two crankcase breathers

S&S CYCLE 4" Big Bore Bolt-In Sidewinder? Cylinder Kit - 100" - Silver 910-0642 Tires Four fuel delivery ports for4" 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,