3-5/8″ Bore Standard Compression Piston Kit for Super Stock® Heads
These forged pistons are designed for use in S&S® Big Bore Hot Set Up Kits® for HD® Evolution® big twin engines, and S&S® 3-5/8″ bore engines with S&S® Super Stock® cylinder heads and 4-1/4�, 4-1/2″ and 4-5/8″ stroke engines with stock diameter (8-1/2″) flywheels.