You need a good foundation to carry anything on your roof. If your vehicle is not equipped with the factory siderails, consider a Clamp-on Roof Rack by Yakima as your base and work from there. You can add a bike carrier, ski carrier, kayak carrier, cargo box or any number of other available carriers.Lightweight, aerodynamically shaped crossbars help minimize wind noise Locking towers help secure the rack to the vehicle roof Compatible with most cargo carriers to support your active lifestyle Compatible with Yakima T-Slot Products as well Includes Crossbars and Locking Base Towers