Looking for a hard tonneau cover for your 2017-2026 Ford F-250 and F-350 with an 8' bed? The BAKFlip MX4 TS (Gen 3) Hard Folding Tonneau Cover with T-Slot Rails, part number 449331TS, is cut for that application. It is a hard folding tonneau cover, so you get lockable cargo protection and a bed that opens up when the job needs it.
The BAKFlip MX4 TS keeps everything good about the Gen 3 MX4 and adds T-slot rails for mounting gear on top.
On a Super Duty the bed is a rolling toolbox, and a hard cover keeps what is in it protected from weather and out of sight.
Full bed access without taking the cover off the truck. Fold it toward the bulkhead, let the prop rod clips hold it open, and load tall or bulky cargo. The bumpers keep the cab protected, and the third brake light stays visible whether the cover is open or closed.
Tougher than the original. BAK rebuilt the MX4 panels in layered aluminum with a high-density polymer core, a 22% strength increase over the first-generation cover. Aluminum rails and a stiff frame support up to 400 lb of evenly distributed cargo on top.
More for rain and road spray to get past. Updated EPDM perimeter seals, tight-fit clamps, a longer dual-action tailgate seal on most applications and an integrated drainage system all work to keep the bed dry.
Textured matte black, Multi-Shield coated. The coating is built to resist scratches, scuffs, dents and UV, and the cover stays nearly flush with the bed rails.
Rack-ready from day one. T-slot channels in the side rails take racks, cargo holders, tents and cross bars, all sold separately. You get a hard folding cover and a place to carry gear above it.
It locks itself. Close the cover and the latch engages. Gen 3 uses redesigned latching panels and lock hardware that BAK built to resist forced entry better than the Gen 2 design.
For a folding cover that locks itself, seals tight and fits flush, the BAK 449331TS is a strong choice. It is assembled in the USA, backed by a five-year limited warranty, and available from Track Ready Products.
Installation is a one-person, bolt-on job with a click-in design that is 12% quicker than the previous generation. Most trucks need no drilling or trimming.
Start with a clean set of rails. Position the cover, tighten the clamps evenly, and run it through a full open and close cycle to check that it moves freely and latches.
After the first week of driving, recheck the clamps and retention hardware for tightness, and check them again now and then. Wash with mild automotive soap and water, keep the cover secured at all points while driving, and clear snow and ice before opening.
