Expand your gear carrying options with a versatile GM Accessories Motion XT XL Cargo Box. This aerodynamic Luggage Carrier offers premium features such as an easy-to-use QuickGrip mounting system and dual-side opening for added convenience. This cargo carrier is made from durable materials to help keep your items safe and secure while freeing up room in your vehicle. It mounts on your vehicle's roof rack and requires cross rails. (Cross rails sold separately). Non-GM Warranty. Limited lifetime warranty by Thule® . For more information contact your dealer. Roof-Mounted Motion XT XL™ Luggage Carrier by Thule® - Associated Accessories