S&S Cycle
S&S, 88" to 100" conversion cylinder & piston kit. Silver
S&S, 88" to 100" conversion cylinder & piston kit. Silver
Couldn't load pickup availability
Silver finished aluminum cylinders. Fits stock 88" models with stock 4" stroke. Bigger is usually better when it comes to performance. This bolt-on big bore Sidewinder kit is as big as possible; without requiring additional work. No need for engine removal; splitting and boring the cases or even re-balancing the flywheels. Just swap the stock cylinders and pistons for these S&S 4" big bore parts and you''re ready to rock with 100HP! (note). Note: S&S measured a 72.95 to 100.30 HP increase with for a stock 88". They additionally used S&S 585 cams; Power Tune headers; slip-on mufflers; the stock EFI throttle body and a S&S Stealth air cleaner. Note: Not for use with S&S 79cc cylinder heads.
Share
Why buy from Forty5°
-
Not sure it fits?
Ask on WhatsAppPick your bike at the top of the page to see which parts are listed for it. For anything not listed, send us your VIN on WhatsApp and we'll confirm the fit before you order.
-
Workshop installation
Book a serviceHave us fit it. Book installation at parts intake — same-day on most jobs, master techs only.
-
Founder-led aftersales
Get in touchQuestions after fitment? You'll speak to the people who installed it. We answer email and WhatsApp Tuesday to Sunday, 11am–7pm.