The XR Series combines the PRO MX with the integrated Trax Rail System that allows for unique and personal customization above your tonneau cover. The RetraxPRO XR, our premium Aluminum Series cover, combines industrial strength aluminum construction with an incredibly resilient matte finish. 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 Yakima, Thule, Rhino Rack 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.\nIndustrial Strength Aluminum Construction\nBefore purchase please verify if you have New Body Style or Classic Body Style on 2019 Ram 1500 -- This part is for the Classic Body Style\n2009-2010 Dodge Ram 1500 67.4 Bed Without RamBox, 2011-2018 Ram 1500 67.4 Bed Without RamBox, 2019 Ram 1500 Classic 67.4 Bed Without RamBox