The XR Series combines the PowertraxPRO MX with the integrated Trax Rail System that allows for unique and personal customization above your tonneau cover. The PowertraxPRO XR electric retractable truck bed cover combines industrial strength aluminum construction with an incredibly resilient matte finish. 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.