BAK Industries Bakflip MX4 Hard Folding Tonneau Cover for Ford F-150 Super Crew (5'5)

The MX4 is rated to support up to 400 lbs (approximately 180 kg) of evenly distributed weight when closed. This is higher than most competitors in the hard folding category and makes it practical for placing gear or sitting on the cover when needed. Concentrated loads or sharp objects should be avoided regardless of the overall weight rating.

Yes. The MX4 can be driven with the cover in a two-thirds open or fully open position, in addition to fully closed. The two-thirds position is useful when carrying longer items that extend beyond the tailgate. When fully opened, the panels fold and prop vertically against the cab.

The core installation is clamp-on and does not require drilling into the bed or rails. The kit includes drain tubes for water management, and routing these may require drilling depending on your specific F-150 configuration. Review the fitment instructions for your Super Crew build before starting, or have a 4x4 accessories fitter handle the install if you'd prefer a professional job.

The MX4 uses EPDM seals throughout, including upgraded end caps for improved performance, plus a multi-function tailgate seal. The design is intended to be highly water-resistant under normal conditions including heavy rain. Like all folding tonneau covers, it's not fully waterproof, drain tubes are included to direct any water that gets past the seals away from the bed. For gear that genuinely needs to stay dry, using a dry bag or sealed case inside the tub adds a useful secondary measure.

A full-width toolbox that spans across the bulkhead area is generally not compatible with the BAKFlip MX4, as the front panel folds flat and needs to rest close to the cab. Low-profile or under-rail toolbox systems designed for use with folding covers may be compatible depending on dimensions. Confirm your toolbox measurements against the cover's folded height before purchasing.

This cover is engineered specifically for the Ford F-150 Super Crew with the 5'5" (short) bed. Bed covers are machined to precise dimensions, and an incorrect fitment won't seal or install properly. If you have a SuperCab or Regular Cab F-150, or a different bed length such as 6'5" or 8', a different BAK part number is required.

The MX4's aluminium panel construction provides a meaningful step up in rigidity and resistance to forced entry compared to soft roll-up or hard roll-up covers. The aluminium panels are designed to resist common intrusion attempts, though no tonneau cover provides complete security against a determined person with tools and time. For high-value cargo, a lockbox inside the covered tub is worth considering alongside any cover.

The MX4 suits this dual-use scenario well. During the week, the 400 lb load rating and EPDM weather seals keep tools and materials protected. On weekends, the folding design gives full access to the 5'5" bed without tools and closes down to a low-profile matte finish that doesn't add significant height. The aluminium construction and Made in the USA build quality are oriented toward long-term durability across heavy use rather than the budget end of the market.