L73-92 Big Twin

Steel crash bar manufactured from stock 1 1/4" diameter tubing

All traditional H-D male mount

95-96 FLHTCUI

Hasting Rings Shovel 80" +.010 Kickstart 4speed 1936-84 L73-92 Big TwinStd cyl. bore: 3. 498" (88. 85mm). 1st ring: 1. 6mm. 2nd ring: 1. 6mm. oil ring: 4. 75mm. Tech tip: Piston grooves vs piston rings. It's not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings, the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3 piece flex