2M6127030 3-1/2" bore piston rings chr/moly. +.030"

When your Shovelhead cylinders have been bored out to .030 over, you need a set of rings that can handle the extra clearance with precision. These Hastings chrome-moly piston rings are designed for late 1978 to 1984 1340cc (80 inch) Shovelhead engines with a 3-1/2 inch bore. Sold as a pair, the set features 1.6mm compression rings and a 4.75mm oil ring. The oil rings utilize the Hastings flex vent three-piece design for superior oil control and reduced friction. These rings are engineered for durability and a perfect seal in oversized cylinders. Always verify your piston groove dimensions before assembly to ensure a proper fit for these high-quality American-made rings.