2015-2022 F-150 / 2007-2021 Toy. Tundra XRS Cross Bars Kit - Tex Blk (Attch Tonneau Cvr T-Trk) (GOR5935015T)Go Rhinos XRS Cross Bars allow you to mount a rooftop tent on your truck while preserving the utility and capacity of your factory truck bed. The corner uprights elevate and support the 4 CORE cross bars approximately six inches above the factory bed cap, which provides for unobstructed access to the truck bed. Mounted tents and cargo boxes will sit below the roof of the cab, which reduce wind resistance. Each 4 CORE cross bar works with standard 20