BAKFlip MX4 Hard Folding Tonneau Cover For 2017-2026 Ford F-250/350/450 8' Bed - 448331

The New and Improved BAKFlip MX4 (GEN 3) Tonneau Cover by RealTruck

The world’s top-selling truck bed cover has been refined. Meet the upgraded RealTruck BAKFlip® MX4 (GEN 3), the latest iteration of RealTruck’s flagship tonneau cover. This new generation enhances the features truck owners value most, offering superior durability, improved functionality, and heightened security. Crafted mainly from alloy materials, including heavy-duty aluminum panels and side rails reinforced with high-density polymer cores, it boasts a 22% strength increase over the original. Security improvements include re-engineered locks alongside BAK’s patented auto-latching system for better protection against forced entry. Weather resistance is optimized with redesigned EPDM rubber seals and a longer dual-action tailgate seal, ensuring a tight, reliable barrier. The cover fits flush with your truck’s bed rails for a sleek, low-profile look, finished in textured matte black. Installation is faster with a refined click-in system, and operation remains effortless, allowing full bed access without blocking the third brake light.

The MX4 is part of the BAKFlip Tonneau Cover Series with a sleek matte finish and upgraded aluminum panels, the MX4 delivers top-tier protection and a flush, low-profile look that complements any truck.

Looking for the MX4 with the T-Slot rails for added accessories? Check out the BAKFlip MX4 TS.

Key Features Of The New BAKFlip MX4 (GEN 3)

NOW EVEN MORE SECURE THAN GEN 2 - The new BAKFlip MX4 comes with an updated design tested to keep your gear on theft-resistant lockdown with a patented and upgraded auto-latch locking system.

FITS TIGHTER TO KEEP WATER OUT - Improved seals and all-new tight-fit clamps provide state-of-the-art weather protection.

PROVEN FOR EXTREMES FROM ALASKA TO FLORIDA - Tested in the harshest conditions—from -40 to 180℉ and zero to 95% humidity—and guaranteed by a 5-year warranty.

BUILT 22% STRONGER THAN THE ORIGINAL - Constructed for increased durability and heavy-duty use with a sturdy premium-grade aluminum surface and high-density polymer core.

MATTE BLACK FINISH - The all new matte black finish offers superior scratch resistance and UV protection.

NO WASTED BED SPACE, PARKED OR DRIVING - 100% bed access. All the time. Simply fold to the cab, easily secure, and safely drive with the cover fully open.

EASIER THAN EVER ONE-PERSON INSTALL - DIY installation is now 12% faster than the original with all-new click-in design. No need for an extra hand to help, and no drilling for most makes and models. Install yourself in under 30 minutes.

BAKFlip MX4 Specifications

BAKFlip MX4 Installation Guide

Installing the BAKFlip MX4 is quick and easy using the included clamp system and instructions. Operating the cover is just as simple—drop the tailgate, release the rear latch mechanism, and fold the cover toward the bulkhead. If full bed access is required, fold the cover flush against the rear window and support it with the integrated prop rods and re-engineered clips.

Warranty

BAKFlip MX4 Tonneau Cover includes a 5-Year Limited Warranty against structural defects in materials and workmanship. Original purchase proof required; warranty applies to original purchaser only and is non-transferable. BAK determines repair or replacement eligibility. Warranty excludes damage from accidents, misuse, improper installation, modifications, or normal wear. Shipping charges apply for warranty service.