The Thule TracRac SR sliding rack system is comprised of 2 components: base rails and overhead racks. This is custom configured based on the vehicle. Product Features Sliding racks adjust to the length of the bed to carry different loads and can easily be removed Protect different size loads with the aluminum load stops that adjust to the full width of the truck Aerodynamic and quiet due to the integrated wind deflectors Rack and cargo remain stable and secure due to corner brace design and aluminum crossbars Securely transport all cargo with the aluminum ARC cleats that provide additional tie-down points Accommodates a variety of Thule accessories for easier transport, extra capacity, or tie-down points Quick installation without drilling into the truck Durable, corrosion resistant aluminum construction See Thule Buyer's Guide for recommended vehicle fits *Holds up to 567 kg when racks are properly installed and weight is distributed evenly. Vehicle limits may vary. Please check vehicle owners manual.