Rage Power Sport Tubular steel bicycle rack specifically for rear square tube styled RV bumpers to carry 1-2 bicycles. The 24″ L x 20″ W RV Bumper Bike Rack attaches to a 4″ -4.5″ RV bumper with a 6.5″ U-Bolt. Includes an “L” shaped 19.5″ support for bicycle tie-downs and will work with bicycle tires up to 1.75″ wide. Maximum 60 lb. capacity.