Vehicle Fitment Information
Pistons & Top End
S&S Bolt-In Sidewinder 4" Big Bore Kits
$2,705.95
Bolt-in big bore kits requiring no machining, balancing, or splitting of crankcases. Features cast ductile iron sleeves in cast aluminum cylinders for superior heat transfer. Increases 88" engines to 100" and 96"/103" engines to 110". Includes cylinders, forged pistons, rings, piston pins, clips, and gaskets.
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110" Kit for 07-17 Twin Cam
Boosts 96" and 103" engines to 110".
100" Kit for 99-06 Twin Cam
Boosts 88" engines to 100".
