Toyota Tundra Bed Rack - DRIFTR Topper Add-onTundra Bed Rack Topper Our Toyota Tundra Bed Rack DRIFTR Topper essentially adds an entire roof rack on top of your full height bed rack. If you need additional height to clear the cab of your truck because of a longer, wedge style roof top tent, this will allow you to achieve that. Without the topper, our full height bed rack is flush or nearly flush with the cab. When paired with our DRIFTR Roof Rack, you get a super solid, even level deck from the