106-5522 3-1/2" bore 9:1CR piston kit. +.030"

This S&S forged piston kit is the ideal solution for a 1340cc Shovelhead rebuild on 1979 to 1984 models requiring a .030 inch oversize. These pistons provide a high 9:1 compression ratio, giving your 80-inch Shovel a noticeable boost in performance. Built from an advanced forged alloy with specialized skirt profiles, they offer the quietness of a cast piston with the strength of a forging. Sold as a set, the kit includes wrist pins, clips, and rings. To ensure the best results, a knowledgeable mechanic should verify all engine components and clearances before installation and the rider must follow the standard break-in procedure for a fresh engine.