Clutch hub bearing kit for Big Twin 1936-1984. Change the caged roller bearing found in all 74 inch and 80 inch. Now your clutch hub can rotate on 52 solid hardened roller bearings. The bearings supplied with the kit are manufactured of 5211 bearing alloy steel, and hardened all the way through. The kit contains a tube of baring grease (which will not burn up or fly off), a bearing retainer and three piano wire spring retainers for the clutch hub.