The RealTruck BAKFlip MX4 TS takes the most popular hard folding tonneau on the market and adds the one feature truck owners have been asking for: built-in rack compatibility. Engineered by BAK Industries and assembled in Missouri, the MX4 TS is the GEN 3 evolution you already trust, now with integrated T-slot side rails that accept Yakima, Thule, and most other T-slot crossbars—no adapters, no clamps on top of the cover, no compromise to weather sealing.
Under the matte black Multi-Shield finish, the GEN 3 panels run 22 percent stronger than the original MX4 thanks to high-density polymer cores bonded to precision aluminum skins. The cover sits nearly flush with your bed rails, locks down with BAK’s re-engineered auto-latching system, and uses upgraded perimeter seals and tight-fit clamps to keep rain, dust, and debris out. Open it fully and the panels fold upright against the cab for 100 percent bed access, secured by heavy-duty prop rods with rubber cab-protection bumpers.
What really sets the TS apart is the T-slot rail. Mount a pair of crossbars, drop on a rooftop tent, slide in a kayak carrier, or stack a cargo basket—RealTruck rates the rails for up to 400 pounds of evenly distributed weight. The crossbars stay mounted even when the cover is folded open, so you can load the bed and the rack at the same time.
Install is a one-person, no-drill job thanks to BAK’s new click-in clamp design, roughly 12 percent faster than the previous model. Most trucks we work on at our Phoenix and Peoria install shops are buttoned up and ready to drive in 30 minutes or less. BAK backs the MX4 TS with a 5-year warranty. Stop by either Camper Capital location to see one in person and we’ll get you on the install schedule.