Price history at RevZilla
Recorded at RevZilla since Oct 9, 2026: low $1,540.95 (Oct 26, 2026), high $1,594.95 (Oct 9, 2026). Last checked Oct 27, 2026.
From the store's product feed and AvantLink's price records; feeds can lag the store's own site.
Product Description
S&S 100 Sidewinder Big Bore Kit For Harley Twin Cam Features S&S Cycle 4 big bore cylinder and piston kit boosts 88 Twin Cam engines to 100 Bolt-in kit does not require any machining, rebalancing or splitting the crankcases The biggest cylinder bore that can be installed in a stock crankcases without machining! Complete kit include cylinders, pistons, gaskets, and instructions Set up for 4 stroke 4.937 Cylinder length Forged pistons Compression ratio: 83cc CNC Ported Stock Heads 10.8:1, 85cc Stock Heads 10.5:1, 89cc S&S Heads 10.1:1