106-5537 Forged 3-5/8" big bore piston kit. +.020"

When a big bore Big Twin needs a fresh hone, these +.020 over S&S forged pistons are the perfect solution. Designed for 1936 to 1984 models with 3-5/8 inch cylinders, these pistons support massive displacements from 88 to 103 cubic inches depending on your flywheel stroke. They feature a 30cc dome and are crafted from a high-strength alloy that stands up to the heat of high-performance riding. The skirt profile is optimized for low noise and a long life cycle. This kit is sold as a set and comes complete with forged pistons, wrist pins, clips, and rings. It is a professional-grade kit for Shovelhead and Panhead owners who demand the reliability and power that only S&S components can provide.