The J-Stacker takes only minutes to install, and its design makes kayak loading a breeze – just lift the boat and place it in, so you can be on your way to fun out on the water in no time. Plus, the J-style carrier leaves plenty of room on your roof rack for other accessories. The J-Stacker mounts to most OEM and aftermarket crossbars with a maximum diameter of 3.5 in..
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