106-5779 3-7/16" forged stroker piston kit. +.060"

When you are building a vintage stroker, S&S is the name you trust for the bottom end. This forged piston set is designed for 1941 to 1984 Big Twin engines running stroker flywheels, specifically 84-inch, 86-inch, or 88-inch setups. These +.060 over pistons feature a 50cc dome volume and are engineered from an advanced alloy with a skirt profile that keeps mechanical noise down while extending engine life. They fit stock 5.330-inch length cylinders on Knucklehead, Panhead, and Shovelhead motors. Depending on your stroke, you can expect compression ratios ranging from 8.4:1 up to 10.8:1. This kit is sold as a set and includes the wrist pins, clips, and a fresh set of rings to get your top end sealed up right.