Lowered rear axle plates are threaded 3/8"-18 for fender brace sissy bar mounting. Adjusters threaded 3/8"-24 use screws for adjusters, to act as push type. Features a raw cast steel construction. Axle mounts accept 3/4" axle, mounts will need material added to fit tight into rectangular swingarm tubing. Recommended plug weld from sides as well. Use axle and spacers or 3/4" threaded rod for alignment purposes. Lowers the bike 1-1/2". *NOTE: Welding and fabrication required for installation. Cut original rectangular swingarm to desired length. Fabricator must cut swingarm and reweld lowering axle plates in place and check fender clearance. *NOTE: Must be welded in place. Use rigid frame wheel adjusters.