The premium aerodynamic load bars for the Thule Evo roof rack system offer an exceptionally quiet ride and easy installation of accessories. WindDiffuser technology disturbs airflow to reduce noise and drag for improved fuel economy.. TrailEdge design reduces aerodynamic drag by allowing clean air separation from bar.. SmartSlides slidable length scale doubles as an under-bar aerodynamic cover, providing quick, no-hassle rack installation.. SwingBlade end cap pivots open to allow full access to the T-slot for easy accessory installs.. Upper T-track with QuickAccess interface allows smooth installation and removal of accessories.. BoxBeam internal structure creates an exceptionally strong load bar.. Reference the Thule Buyers Guide to see which roof rack fits your vehical.. Maximum load capacity: 220 lb. 91021139176 33978400006 711220