As low as $378.81/mo with or . (Pay in 4 interest-free payments)
S&S CYCLE Bolt-In Sidewinder® 4" Big Bore Kits (100") – Silver Upgrade your street bike with the S&S CYCLE Bolt-In Sidewinder® 4" Big Bore Cylinder Kit , engineered to boost a 88" engine to 100" . Designed for dependable street performance, this complete bolt-in kit delivers strong response with the right cam combination. Why You’ll Love It Bolt-in design : no machining, balancing, or crankcase splitting—install with the engine still in the frame. Superior heat transfer : cast ductile iron sleeve in cast aluminum. Street-friendly compression : 10.5:1 (with stock 85cc heads) for dependable power and great drivability. Fitment boost : 88" → 100" (96" & 103" boosted to 110" ). Complete kit includes cylinders, forged pistons, rings, piston pins, clips, and gaskets. Specifications Bore Size : 4.000" Stroke Length : 4" Riding Style : Street Model : Sidewinder Type : Big Bore Units : Kit Finish/Color : Silver Compression Ratio : 10.5:1 Displacement : 100" Note: Not for use with S&S 79cc heads .
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"
Complete kit includes cylinders, forged pistons, rings, piston pins, clips and gaskets
or 
. (Pay in 4 interest-free payments)
