This high performance nylatron clutch hub liner kit will bring your old 10 spring Big Twin clutch into the modern age by providing smooth clutch action and diminishing chatter. Can be run wet or dry, this hub liner kit reduces friction and resists wear. Combine it with #73128 clutch hub bearing kit and you'll have the best, smoooth-acting, virtually maintenance free clutch assembly available. Clutch hub liner kits fit all Big Twin models 1941-later 10 spring clutch.