The Thule WingBar Evo Aluminum roof bars are designed for the Thule Evo roof rack system, offering the perfect balance of performance, style, and ease of use. Featuring WindDiffuser technology, they redirect airflow to reduce noise and drag, improving fuel efficiency. The TrailEdge design creates a clean air separation from the bar to further minimize aerodynamic resistance. The integrated SmartSlides sliding length scale also serves as an aerodynamic under-bar cover, allowing for quick and intuitive rack installation. SwingBlade end caps pivot open to provide full access to the T-track for easy accessory installation. In addition, the QuickAccess T-slot interface enables fast and effortless mounting and removal of compatible accessories. With their internal BoxBeam structure, these bars are exceptionally strong, ensuring durability and safety on every journey.