These 3-5/8" bore forged pistons are designed as a high 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 Harley-Davidson® Evolution® engines and in S&S 3-5/8" bore engines with Super Stock cylinder heads. The 92-1100 series are for use in 4-1/4", 4-1/2", and 4-5/8" stroke engines with stock (8-1/2") diameter flywheels, and in 4-3/4" stroke engines with small (8-1/4") diameter flywheels. These flat top, +.020" oversize pistons are made from high strength low silicon forging for racing applications.
