Whispbar HD (Heavy Duty) roof racks are built for maximum performance and minimum fuss. The roof rack crossbars are a tough aluminium profile with a universal channel to accept many heavy duty roof rack accessories. Inlay Technology protects the bar and the load to give these heavy duty roof racks maximum performance day in day out. Loaded with features these bars are a treat to use, like the in-built tie down point, or the rubber inlay technology that cleverly leaves the t-slot exposed for constant use, but protects the bar and keeps them quiet. Because of the Smartfoot system transferring to another vehicle is a dream, you'll only need a new kit, not a complete new bar. And Whispbar HD roof racks come fully assembled so you're up and running with your new racks super quick.