WK1617 1340cc Shovel low compression piston kit. +.040"

For Shovelhead engines requiring a significant bore increase, this .040 inch oversize Wiseco piston kit fits 1340cc models from 1979 to 1984. These forged pistons are built for the long haul, featuring a 7:1 compression ratio that prioritizes reliability over raw power. This lower compression helps the engine run cooler and more consistently. The kit is sold as a complete set and includes wrist pins, circlips, and Hastings rings. The pistons are designed for use with 1.2mm top and middle rings and a 4.75mm oil ring. This is a high-quality forged upgrade that provides a stable foundation for any Shovelhead top-end rebuild.