XDP offer a wide variety of Tire Mounts that allow you to mount an spare tire in the bed instead of under your 2004.5-2005 Chevy/GMC 6.6L LLY Duramax. The mounts offered are made of superior quality materials to provide a secure fit and will last for years to come. Most mounts are universal in design with each offering their own unique solution for mounting the tire. XDP offers the best quality Tire Mounts from manufacturers like N-Fab, Titan Fuel Tanks, Addictive Desert Designs, and Dorman.