S&S Cycle

S&S® 80" Cast Flat-Topped Replacement Piston Kits For 1984-'99 HD® Big Twins W/ Stock Heads or S&S Performance Replacement Heads - STD.

Whether you're racing Hooligan flat-track or just want more power, the S&S Hooligan kits for 2000-'21 Harley-Davidson Sportster models will give you an edge on the competition. Boost that 883 to...

Boost any 883cc Harley-Davidson Sportster to 1200cc. No machine shop? No problem, no machining is needed. Don't want to rebalance your stock 883cc flywheels? You don't need to since these pistons...

Type: 465C Rear; Timing Open: Intake 2.8 degree/Exhaust 33.1 degree; Timing Closed: Intake 14.4 degree/Exhaust 5.8 degree; Duration at 0.053: Intake 197.2 degree/Exhaust 218.9 degree; Valve Lift :...

20 percent flow increase on supply side and 52 percent flow increase on scavenge.

The Air Stinger takes the existing high flow Stealth air cleaner and replaces the air smoothing stinger with a similarly shaped filter element. More filter surface equals a 55 percent gain over a...