BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed
In: Best Hard Tonneau Covers
- Hard folding tri-panel aluminum design
- 500 lb distributed weight rating
Tonneau covers protect cargo and improve security. Fit and opening style matter.
Standout picks from our best-of lists. Tap any product for features, pros and cons.
In: Best Hard Tonneau Covers
In: Best Soft Tonneau Covers
In: Best Hard Tonneau Covers
In: Best Soft Tonneau Covers
In: Best Hard Tonneau Covers
In: Best Soft Tonneau Covers
In: Best Hard Tonneau Covers
In: Best Soft Tonneau Covers
Ranked shortlists for specific budgets and use cases. Start with the one that matches yours.
Soft roll-up covers are affordable. Hard folding and retractable covers improve security.
Exact truck bed fit is essential.
Match truck model and bed length.
Soft, hard folding or retractable.
Hard covers resist theft.
Seals reduce leaks.
Consider bed access needs.
Research-based picks from specs, independent reviews and owner feedback.
No paid placements, ever.
Our methodologyOne of our strongest picks is the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed, a standout in our Best Hard Tonneau Covers list. The Gator ETX Soft Tri-Fold Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed is another excellent choice.
Start with your main use and budget, then compare our shortlists: Best Hard Tonneau Covers, Best Soft Tonneau Covers, Best Tonneau Covers for Ford F-150.
Match truck model and bed length.
Most hard folding and retractable tonneau covers are rated for 250 to 500 lbs distributed evenly across the closed panels, which is enough for an adult to walk carefully on, as long as weight is not concentrated on one foot near an unsupported panel edge or seam. BAKFlip MX4 and BAKFlip G2 are rated at 400 lbs distributed; UnderCover Ultra Flex is rated around 400 lbs; Gator EFX carries a similar rating. The rating assumes the cover is fully closed and latched, not partially open. Concentrated point loads, like a toolbox corner or a jack stand placed directly on the cover, can dent or crack a panel even within the stated weight rating. Never stand on a retractable cover's canister area, and always check the specific model's published weight rating before loading cargo or standing on top, since ratings vary by brand and generation.
Hard folding and rolling covers use a continuous rubber bulb seal around the bed rail perimeter that compresses when the cover is latched, plus a tailgate seal where the cover meets the tailgate. This combination blocks wind-driven rain effectively and prevents standing water from pooling in the bed. Retractable covers add a canister seal at the front of the bed where the panels store when open. Snow accumulation on top of a closed hard cover is not a functional problem structurally (the weight rating covers typical snow load), but ice can form in the seal channel and make the cover harder to open until it thaws. For regions with heavy snow, brushing accumulated snow off before opening the cover prevents it from sliding into the bed opening.
Folding hard covers (BAKFlip MX4, UnderCover Ultra Flex, Gator EFX) typically weigh 90 to 130 lbs including the mounting rails, and one person can usually install them with a helper to lift panels into place. Retractable covers (Retrax RetraxPRO XR) weigh 100 to 150 lbs and include a canister housing at the front of the bed that adds installation complexity, since the canister must be mounted level and the rail system must align precisely for the slats to retract smoothly. Both types require two people for safe installation, primarily to align the side rails to the bed rails before tightening clamps, not because either panel type is unusually heavy for one person to lift individually.
No, in the United States, the Magnuson-Moss Warranty Act prohibits a manufacturer from voiding an entire vehicle warranty because of an aftermarket part unless the dealer or manufacturer can demonstrate that the specific aftermarket part caused the specific failure being claimed. Installing a tonneau cover that uses factory stake pockets and does not require drilling (BAKFlip MX4, Retrax, UnderCover Ultra Flex, Gator EFX are all clamp-on or stake-pocket designs) carries essentially no warranty risk. Covers that require drilling into the bed rail or bed cap carry a small risk that a dealer could argue drilling caused a specific corrosion or leak claim in that exact location, though this is rarely enforced in practice. Choosing a no-drill clamp-on model avoids the question entirely.
A quality 18 to 24-oz marine-grade vinyl cover, properly tensioned and stored closed when not in use, typically lasts 5 to 8 years of daily outdoor exposure before UV degradation causes visible cracking, fading, or shrinkage at the seams. Covers left in intense sun year-round (southwestern US, high-altitude regions) tend toward the shorter end of that range; covers in more temperate or garage-adjacent climates last longer. The most common early failure point is not the vinyl sheet itself but the Velcro or snap attachment strip along the bed rail, which loses grip years before the vinyl fails structurally. A cover with a replaceable rail-mounted tension system (most models in this list) lets you retension an aging cover rather than replacing the whole unit.