The taper allows the o-ring to be installed

Panhead and Shovelhead

Rugged SBS synthetic zippers with knotted and silenced nylon cord pulls

Head Bolt Washer Kit CAD Plated Fits 1940-47 Harley-Davidson 45's

Triumph motorcycles 1969 & up

Chrome Solo Seat Bolt-On Spring Mounts for Harley-Davidson Swingarm Frames 1958 - 1985 Makes_Norton The taper allows the o-ringThese chrome plated, bolt on solo seat spring mounts fit Harley Davidson Big Twin frames from 1958 through 1985. This includes Panhead, generator Shovelhead and cone Shovelhead powered motorcycles. These seat spring mounts conveniently fit over the threaded end of the shock studs (the heavy duty studs that hold the top of the shocks to the frame) and are held in place with the stock nuts. This gives a secure and tidy way to support the solo seat