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 ENLARGED. (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.
FIT