***TRUCK/TRAILER PICKUP ONLY***RealTruck Hard Folding Truck Bed Tonneau Cover | 449339TS | Fits 2021-2025 Ford F-150 (Including 2022+ Lightning) 5' 6" Bed (67.2")

America’s best-selling tonneau cover just got an upgrade. Introducing the BAKFlip® MX4 TS, available exclusively from RealTruck®. This premium bed cover builds on the legendary MX4 with a significant addition—integrated T-slot side rails for mounting racks, carriers, rooftop tents, and other overland or cargo accessories. Built tough from robust aluminum, the MX4 TS features redesigned top panels with high-density polymer cores, delivering 22 percent more strength than the original. The ultra-low profile sits flush with your truck’s bed rails for a clean, sleek look, while the Multi-Shield® matte black finish offers 11x more surface durability and supports up to 400 pounds of evenly distributed weight. Engineered for all-weather performance, this cover features upgraded perimeter seals, tight-fit clamps, and a dual-action tailgate seal that allows tailgate operation in any position. Water is diverted through integrated drainage tubes and channels to keep your gear dry and secure. Cargo stays protected thanks to BAK’s auto-latching system, which secures the cover with every panel fold. Meanwhile, the T-slot rails expand your hauling options by enabling fast, secure installation of crossbars and other accessories—unlocking extra cargo capacity above and below the bed cover. Easy to use and easy to install, the MX4 TS opens by releasing the rear latches and folding forward. For complete bed access, it props upright against the cab with built-in rubber bumpers to prevent scuffs. Click-in clamps cut install time by 12 percent over the previous model. Proudly assembled in Missouri using globally sourced materials, the BAKFlip MX4 TS is backed by a 5-year warranty from RealTruck.