The Yakima 1A HiRise Spacers are 3.5" aluminum spacers used to raise Yakima's 1A Raingutter Towers, increasing clearance to fit over domed roofs or existing factory racks.
Rhino-Rack's custom-engineered DK523 Direct Fit Kit. Contains all necessary pads/clamps for installing 2500 Series roof racks onto the specified vehicle's bare roof.