Crossbars for the Thule Evo roof rack system. The WindDiffuser technology interrupts the airflow, resulting in reduced noise and air resistance as well as lower fuel consumption. The TrailEdge design reduces air resistance by separating the air from the rack. The sliding longitudinal scale SmartSlides also serves as an aerodynamic cover beneath the rack and allows for quick and hassle-free rack installation. The SwingBlade end cap can be opened to provide access to the T-slot for easy attachment of accessories. The upper T-profile with QuickAccess allows for the simple mounting and removal of accessories. The internal BoxBeam structure ensures an exceptionally stable load bar. With the Thule buying guide, you can find the recommended crossbar length for your vehicle. Two-pack.