2M5722000 3-5/8" bore chr/moly piston rings. STD

These Hastings chrome moly piston rings are designed for Shovelhead engines running a 3-5/8 inch big bore setup. This standard size set is intended for one cylinder and features 2.0mm compression rings and a 4.75mm oil ring. When you are building a big bore motor, ring quality is essential for proper heat dissipation and oil control. These rings are compatible with most big bore pistons using these specific groove heights, though you should always measure your piston grooves first. Note that if you are running S&S pistons, they often require a different ring thickness, so double-check your specs before installation. These are a reliable choice for maintaining compression and longevity in your high-performance Shovelhead build.