Description: Increase your vehicles cargo-carrying capabilities by adding a crossbar set. These aero-style crossbars may be used in conjunction with Genuine Subaru roof attachments and carriers. Consult vehicle owners manual for total roof load limit. Increase your vehicle’s cargo-carrying capabilities by adding a crossbar set. Consult vehicle owner’s manual for total roof load limit. Aero Crossbars do not support the use of roof top tents..