3-5/8" Shovelhead Piston Ring Set Standard

Hastings moly piston ring set is for a 3-5/8" bore and is standard size. Features moly top compression rings with the size of 1/16" and chrome oil rings.
For installation of 3-5/8" cylinders after spigot holes have been enlargedto 3.8750". (See diagram for photos.) Can be used on 1966-1984 FL, 1971-1984 FX, 1980-1984 FLT, 1982-1984 FXR. Sold as a pair for 2 pistons. *NOTE: All cast iron cylinders have same piston to wall clearance .0025 -.003.