BAKFlip MX4 Review for the F-150: Worth It? (November 2026)
The BAKFlip MX4 is a hard folding cover for 2021–2026 F-150s with a 5 ft 7 in bed. Its updated auto-latch system, tighter seals and full bed access suit owners who want a low-profile cover that folds toward the cab.
On this page (6 sections)
The BAKFlip MX4 is a hard folding cover for 2021–2026 Ford F-150s with a 5 ft 7 in bed. It combines aluminum panels, an updated auto-latch system and revised seals, and folds to the cab when you need full bed access.
The key fit check is bed length: this MX4 model is for a 67.1 in bed, not the 5 ft 5 in version. If you have that shorter bed, the Tutel below is one alternative with a stated 5 ft 5 in fit.
BAKFlip MX4 review: the main strengths
The MX4's main strengths are full bed access, an updated auto-latch system and a fold-to-cab design. Those features make it a candidate if you want a hard cover that can stay on the truck when you need to haul taller cargo.
BAK BAKFlip MX4, F-150 2021+: Best for a flush, hard-folding cover
- Fits 2021–2026 F-150 with 5 ft 7 in bed
- Aluminum panels
- Updated auto-latch locking system
- 5-year warranty
A hard folding cover for the 5 ft 7 in F-150 bed, with an updated auto-latch system and revised seals. It folds to the cab for full bed access.
Pros
- Vehicle-specific fit includes Raptor and Lightning
- Updated auto-latch locking system
- Revised seals and tight-fit clamps
- Can be secured fully open while driving
Cons
- Fit is limited to the stated bed size and model years
- The panels fold toward the cab when you need full access
Its aluminum panels and matte aluminum finish give it a hard-cover construction, while the revised seals and tight-fit clamps are intended to improve weather protection. BAK also backs this model with a 5-year warranty.
The MX4 can be secured fully open for driving. That is useful when a load will not fit under a closed cover, but folded panels still take up space at the front of the bed.
What the MX4’s auto-latch system means
The MX4's updated auto-latch locking system engages as the cover closes, while its lock type is listed as the tailgate. The arrangement is meant to secure the cover with the tailgate closed.
A tonneau cover adds a barrier over the bed, but it does not make unattended cargo theft-proof. For a broader explanation of how different styles close, see how tonneau cover locks work.
Check your F-150 bed before choosing this cover
The MX4 reviewed here fits a 2021–2026 F-150 with a 5 ft 7 in, 67.1 in bed. Confirm the exact bed length and model year before you compare prices or arrange installation.
Ford offers F-150s with different bed configurations, and a cover for one length may not fit another. Measure the bed or confirm its size from your truck’s purchase documents; cab style alone is not enough to identify the bed.
The F-150 5 ft 5 in Tutel hard folding cover is sized for a different bed length. Use the product’s stated fit as a starting point and verify the truck’s year and configuration before buying.
The F-150 bed size guide can help you work through what to measure. If your truck has a bed rack or other rail-mounted gear, check the tonneau cover and bed rack fit guide before settling on a folding design.
How much access do the folded panels leave?
The MX4 provides full bed access when folded to the cab and secured open. This can be useful for loading tall or bulky items that would not fit beneath a closed cover.
That access has a trade-off: the folded panels remain over part of the bed near the cab. Check whether that position works with your usual loads, especially long cargo that needs to lie flat across the bed.
A cover that folds open also differs from a roll-up model, which gathers material near the cab. If you are weighing those styles, truck bed cover types explained outlines how folding and rolling designs affect access.
What weather protection should you expect?
The MX4 uses revised seals and tight-fit clamps intended to improve weather protection. These details can help limit water entry around the bed rails, but no cover should be treated as a completely waterproof box.
Installation and fit matter. Follow the included guide, check that the clamps and seals sit correctly, and inspect them periodically for movement or wear.
If water is getting into the bed, start by checking the seal contact and tailgate area. The guide to sealing a tonneau cover against rain walks through those checks and common leak paths.
How the MX4 compares with other F-150 hard covers
The MX4's clearest distinction is its combination of a stated 5 ft 7 in fit, auto-latching and fold-to-cab access. The alternatives below differ in cargo organization, opening positions or bed-length fit.
The Gator EFX adds adjustable GEARHOLD cargo keepers and a single cable pull. It also fits 2021–2026 F-150s with a 5 ft 7 in bed, and its stated warranty is 2 years.
Gator EFX Hard Tri-Fold, F-150: Best for cargo keepers
- Fits 2021–2026 F-150 with 5 ft 7 in bed
- No-drill installation
- GEARHOLD adjustable cargo keepers
- 2-year warranty
A hard tri-fold option for the same F-150 bed size, with adjustable cargo keepers to help organize items in the bed.
Pros
- GEARHOLD cargo keepers are included
- No-drill installation
- Single cable pull
- Complete bed access
Cons
- Warranty is 2 years
- Fit is specific to the listed F-150 bed
Rough Country's hard tri-fold has three stated positions: open, two-thirds open or closed. Its product details say it fits 2021–2026 F-150 and Lightning models, but confirm the exact bed configuration before choosing it.
Rough Country Hard Tri-Fold, F-150 2021+: Best for three opening positions
- Fits 2021–2026 F-150 and Lightning
- Aluminum panels
- Open, two-thirds open or closed positions
- 5-year warranty
This hard tri-fold offers three stated positions, so it may suit F-150 owners who want partial or full bed access without removing the cover.
Pros
- Can be driven open, two-thirds open or closed
- Full bed access
- Ships assembled
- No-drill installation
Cons
- Confirm the exact bed length before ordering
- Its stated fit is for 2021–2026 F-150 and Lightning
The Tutel is for F-150s with a 5 ft 5 in bed, so it is a different fit from this MX4. It has solid-core hard panels and a limited lifetime warranty.
Tutel Low-Profile Hard Folding, F-150 5.5 ft: Best for the 5 ft 5 in bed
- Fits 2015–2026 F-150 with 5 ft 5 in bed
- Solid-core hard panels
- Clamp-on installation
- Limited lifetime warranty
A low-profile hard folding cover for the shorter 5 ft 5 in F-150 bed. Check your bed length carefully because it is not the same fit as the MX4 above.
Pros
- Fits the stated 5 ft 5 in bed
- No-drill clamp-on installation
- Folds back for bed access
- Limited lifetime warranty
Cons
- Does not fit the MX4's stated 5 ft 7 in bed
- Fit depends on confirming the exact bed length
For a closer look at the first two options, read BAKFlip MX4 vs Rough Country hard tri-fold. If sitting close to the bed rails is a priority, the low-profile tonneau cover guide explains what to compare.
Is the BAKFlip MX4 a good fit for your use?
The MX4 is a good match if your F-150 has the specified 5 ft 7 in bed and you want hard panels with fold-away access. Its updated auto-latch system, revised seals and 5-year warranty are useful points to compare against other covers.
Choose a different fit if your truck has a 5 ft 5 in bed. If you often carry tall cargo, consider whether the folded panels near the cab will work with your load; if partial opening matters, compare the Rough Country’s stated positions.
Our score weighs specs, features and buyer feedback against what you’re shopping for. Pick the MX4 for its stated F-150 fit and auto-latching fold-up design, and start with the hard and low-profile cover category if you want to compare more options.
Frequently asked questions
What F-150 bed does the BAKFlip MX4 fit?
The BAKFlip MX4 model here fits 2021–2026 Ford F-150s, including Raptor and Lightning, with a 5 ft 7 in bed measuring 67.1 in. Check your truck's model year and bed length before ordering, since this cover is vehicle-specific and the 5 ft 5 in bed needs a different fit.
Can you drive with the BAKFlip MX4 folded open?
Yes. The MX4 can fold toward the cab, secure in the fully open position and be driven that way, according to its product description.
That gives you full bed access without removing the cover, though the folded panels occupy space near the cab.
How does the BAKFlip MX4 lock?
The MX4 has an updated auto-latch locking system, and its stated lock type is the tailgate. Close the tailgate as intended and follow the installation guide so the cover and tailgate work together; a locking cover does not guarantee that cargo is theft-proof.
Does the BAKFlip MX4 keep water out?
The MX4 uses revised seals and tight-fit clamps intended to improve weather protection, but a tonneau cover should not be treated as a fully waterproof cargo enclosure. Correct fit, installation, tailgate alignment and seal condition all affect how much water reaches the bed.
