Reese 5th Wheel Hitch Custom Bracket Kit A custom quick install bracket kit significantly reduces the time to install your fifth-wheel rails (up to 50%). In most cases, the custom brackets match up with pre-existing holes in your truck frame. This eliminates the guess work of installing just a rail kit by itself. Fifth Wheel No Drill Custom Brackets for the following Chevrolet/GMC models: 2011-2011 Chevrolet, Pickup, Silverado, 2500 HD 6.6 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 Chevrolet, Pickup, Silverado, 2500 HD 8 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 Chevrolet, Pickup, Silverado, 3500 HD 6.6 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 Chevrolet, Pickup, Silverado, 3500 HD 8 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 GMC, Pickup, Sierra, 2500 HD 6.6 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 GMC, Pickup, Sierra, 2500 HD 8 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 GMC, Pickup, Sierra, 3500 HD 6.6 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 GMC, Pickup, Sierra, 3500 HD 8 ft. Bed, 2 & 4 WD (New Body Style)2011-2011 GMC, Pickup, Sierra, Denali HD 6.6 ft. Bed, 2 & 4 WD (New Body Style)