S&S Cycle 07-17 BT Models 110in Sidewinder Big Bore Kit - Silver

910-0650

Inspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt-in kits do not require machining, rebalancing or engine removal, and include just about everything you’ll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining! Features & Benefits Low friction Ductile Cast Iron liner 10.5:1 Compression Bolts in. No machining, balancing, or splitting the crankcases 96" and 103" engines are boosted to 110" Complete kits include cylinders, pistons, gaskets, and instructions Although not mandatory, we recommend adding an oil cooler to bikes ridden in warmer climates StrokeBoreCylinder LengthPiston TypeDome Volume83cc CNC Heads85cc Stock Heads89cc S&S Heads 4.3754.00"4.937"Forged.75 pop up10.7:110.5:110.2:1 *Not compatible with S&S 79cc Super Stock® heads and 2014-'16 Twin-Cooled™ touring models. S&S does not recommend compression ratios higher than 10:1 for Tri Glide® or other three wheel models (including conversions) due to extra loads caused by the lugging nature of these bikes. Detonation and subsequent engine damage may result.