The XR Series combines the PowertraxONE MX with the integrated Trax Rail System that allows for unique and personal customization above your tonneau cover. The PowertraxONE XR electric retractable truck bed cover is part our Polycarbonate Series covers. The XR Series optimizes cargo capacity with the cover open or closed, providing the ultimate versatility in cargo management. The Trax Rail System will work with most T-slot accessories from Rhino Rack, Yakima, Thule, and many more offering endless possibilities. Pairing the Trax Rail System with accessories offers double the cargo capacity. This unique technology frees up the hitch with the ability to mount bikes, coolers, outdoor gear and more on top of the bed cover by combining the Trax Rail system with the t-slot accessories.\nPowertraxONE XR Tonneau Cover; Matte One Piece Polycarbonate Construction; 2020 Chevy Silverado/GMC Sierra 2500 HD/3500 HD 6' 10" Bed without Stake Pockets - Standard Rails\nThis will fit models with or without Multi-Pro TailgateNOTE: Will NOT fit with factory side storage boxes\n2020 Chevrolet Silverado 2500 HD 82.2 Bed Without Factory Side Storage Boxes, 2020 Chevrolet Silverado 3500 HD 82.2 Bed Without Factory Side Storage Boxes, 2020 GMC Sierra 2500 HD 82.2 Bed Without Factory Side Storage Boxes, 2020 GMC Sierra 3500 HD 82.2 Bed Without Factory Side Storage Boxes