Genuine Rugged Ridge uses a frame mounted platform. It features a heavy duty grid like system with an over built steel design with raised sides for the ultimate protection and greatest ground clearance. All Classic rear bumpers feature a reinforced hitch box that is designed for offroad accessories. The heavy duty rear tire carrier mounts your tire off the rear bumper taking the load off your tailgate. With a reinforced grease fitting and special latching mechanism, this tire carrier is capable of holding up to a 35" over sized tire.