S&S Cycle 99-06 BT Models 100in Sidewinder Big Bore Kit - Silver

910-0642

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 88" engines are boosted to 100" Complete kits include cylinders, pistons, gaskets, and instructions Wrinkle black cylinders – matches stock finish 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 4.00"4.937"Forged8.75 pop up10.8:110.5:110.1:1 *Not compatible with S&S 79cc Super Stock® heads. Not recommended for Tri-Glide or other three wheel models due to lugging nature of these bikes.