3-5/8 Shovelhead Piston Ring Set Standard - Hastings Rings 2M5721

Hastings Rings #: 2M5721

Hastings moly piston ring set is for a 3-5/8 inch bore and is standard size. Features moly top compression rings with the size of 1/16 inch and chrome oil rings.

For installation of 3-5/8 inch cylinders after spigot holes have been enlargedto 3.8750 inch. (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.

Fitment:

Installation instructions (PDF)