S&S Cycle 84-99 BT LSF 3-5/8in Piston Set – .020in

These forged pistons are designed as an intermediate compression piston for engines with S&S Super Stock cylinder heads. These pistons can be used to increase the compression of S&S Sidewinder kits for HD Evolution engines and in S&S engines with Super Stock cylinder heads. They are designed to be used in 4-1/4″, 4-1/2″, and 4-5/8″ stroke engines with stock (8-1/2″) diameter flywheels, and in 3-13/16″ and 4-3/4″ stroke engines with small (8-1/4″) diameter flywheels. 3-5/8″ bore. Made from high strength low silicon forging for racing applications. Small Diameter Flywheels. Piston kits include set of pistons, rings, wristpins, and clips.