4" Big Bore Bolt-In Sidewinder® Cylinder Kit - 100" - Black Air Filters Optional backrest sold separately

Optional backrest sold separately

Reduce engine vibration by up to 50% and road impacts by up to 92%

Billet 6061 aluminum construction

or commuting

Black anodize finish

4" Big Bore Bolt-In Sidewinder® Cylinder Kit - 100" - Black Air Filters Optional backrest sold separately4" Big Bore Bolt In Sidewinder Cylinder Kit 100" Black 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 Complete kit