● Tonneau Covers · Comparison

BAK BAKFlip MX4 Hard Folding vs Retrax RetraxPRO XR Retractable Truck

Both made our Best Hard Tonneau Covers shortlist, at #1 and #3. Here's how they differ and who each one suits.

✎ PickHonest Research Desk▦ Updated October 15, 2026◷ 6 min read

As an Amazon Associate I earn from qualifying purchases. Picks are based on manufacturer specs, independent reviews and owner reports.

BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" BedView on Amazon VS

Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" BedView on Amazon

Quick verdict

Choose the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed if you want highest weight rating of any folding cover in this roundup at 500 lbs distributed. Choose the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed if you'd rather have only cover in this list with 100% unobstructed bed access, no stacked panels to work around. Overall we rank the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed higher: #1 versus #3 in our Best Hard Tonneau Covers list.

Winner overall: BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed

BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed vs Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed compared

Every difference that matters, in one table.

Keep researching

Best Hard Tonneau Covers
BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed review
Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed review
All tonneau covers

Bottom line

Best overall

BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed

BAK Industries

Its case rests on highest weight rating of any folding cover in this roundup at 500 lbs distributed and panels latch automatically as you close each section, no separate locking step.

Hard folding tri-panel aluminum design
500 lb distributed weight rating
Automatic panel latching as the cover closes
No-drill clamp-on stake pocket mount
5-year warranty, tested -40°F to 180°F
Matte black finish matches factory bed rail caps

Pros

Only cover in this list with 100% unobstructed bed access, no stacked panels to work around
Key-lockable at any partial-open position, not just fully closed like folding covers
500 lb weight rating matches the best folding covers despite the retracting mechanism
Sealed ball-bearing glide keeps slats moving smoothly for years without lubrication

Cons

Canister at the front wall eats about 4 inches of usable bed length
Longer, more finicky install since the canister must sit level for slats to retract without binding
1,900 ratings trail the folding covers' review volume

Prices and availability change, so confirm on Amazon.View on Amazon

Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed

Retrax

Its case rests on only cover in this list with 100% unobstructed bed access, no stacked panels to work around and key-lockable at any partial-open position, not just fully closed like folding covers.

Interlocking aluminum slat retractable design
Sealed ball-bearing canister glide system
Key-lockable at any open position
500 lb distributed weight rating
100% unobstructed bed access when open
Canister reduces usable bed length by roughly 4 inches

Pros

Only cover in this list with 100% unobstructed bed access, no stacked panels to work around
Key-lockable at any partial-open position, not just fully closed like folding covers
500 lb weight rating matches the best folding covers despite the retracting mechanism
Sealed ball-bearing glide keeps slats moving smoothly for years without lubrication

Cons

Canister at the front wall eats about 4 inches of usable bed length
Longer, more finicky install since the canister must sit level for slats to retract without binding
1,900 ratings trail the folding covers' review volume

Prices and availability change, so confirm on Amazon.View on Amazon

FAQ

Common questions

Which is better, the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed or the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed?

What is the difference between the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed and the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed?

The BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed stands out because highest weight rating of any folding cover in this roundup at 500 lbs distributed, while the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed stands out because only cover in this list with 100% unobstructed bed access, no stacked panels to work around. The trade-offs differ too: the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed's ma in caveat is that 90-plus lb panel assembly still needs two people to align rails during install, and the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed's is that canister at the front wall eats about 4 inches of usable bed length.

Is the BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed worth it over the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed?

For most buyers, yes: it's our #1 pick. Consider the Retrax RetraxPRO XR Retractable Truck Bed Tonneau Cover, Fits 2015-2020 Ford F-150 5'7" Bed instead if 90-plus lb panel assembly still needs two people to align rails during install is a deal-breaker for you.