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RealTruck

RealTruck BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448538 | Fits 2022-2026 Nissan Frontier w/or w/o Utiliti-Track System 5' 0" Bed (58.5")

  • Based on 34 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Thursday, Aug 6
Order within 21 hours and 35 minutes
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Style: MX4: America’s Top Seller


Size: 5' Bed


Features

  • Fits 2022 - 2026 Nissan Frontier w/ or w/o Utiliti-Track System 5' 0" Bed (58.5")
  • THE BEST-SELLING TRUCK BED COVER IN THE WORLD JUST GOT BETTER
  • 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 conditionsfrom -40 to 180F and zero to 95% humidityand guaranteed by a 5-year warranty.
  • 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.

Description

America’s best-selling truck bed cover just got even better.Introducing the BAKFlip MX4 Gen 3—the latest evolution of RealTruck’s most popular tonneau cover. Now better than ever, the BAK has redesigned the for improved strength, security, and all-weather performance. The Gen 3 MX4 features alloy-based construction, including heavy-duty aluminum side rails and top panels, reinforced with high-density polymer cores. This updated design delivers a 22 percent increase in strength over the previous generation, making it even more capable of handling daily use, heavy loads, and harsh environments. Security has also been upgraded. BAK’s patented auto-latching system secures the cover automatically when closed. Newly engineered lock components provide added resistance to tampering and forced entry, allowing you to transport your gear with confidence. In rough weather, the Gen 3 MX4 holds strong. Revised EPDM perimeter seals and tight-fit clamps offer the best seal yet, helping prevent water intrusion along the bed rails. A longer dual-action tailgate seal weatherproofs the tailgate while preserving full functionality, whether the cover is open or closed. While the MX4 is built tough, it doesn’t compromise on looks. The flush-mount design gives it a sleek, low-profile appearance, while a textured matte-black finish across all surfaces delivers a clean, subtle aesthetic. Installation is easier than ever with a new click-in rail system that cuts install time by up to 12 percent. Day-to-day use is just as simple—drop the tailgate, unlatch, and fold the cover forward. For complete bed access, fold the cover against the cab without blocking your third brake light. The BAKFlip MX4 Gen 3 is proudly assembled in Missouri using globally sourced materials and backed by a 5-year warranty.

Brand: RealTruck


Style: MX4 America’s Top Seller


Exterior Finish: Aluminum


Material: Aluminum


Lock Type: Tailgate


Brand Name: RealTruck


Manufacturer Part Number: 448538


Manufacturer: BAK


UPC: 192631045052


Automotive Fit Type: Vehicle Specific Fit


OEM Equivalent Part Number: 448538


Global Trade Identification Number: 52


Model Number: 448538


Unit Count: 1.0 Count


Included Components: install guide, tonneau cover, hardware kit


Manufacturer Warranty Description: 5 Year


Item Type Name: BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448538 | Fits 2022 Nissan Frontier 5' 0" Bed (60")


Item Weight: 71 Pounds


Material Type: Aluminum


Lock Type: Tailgate


Style Name: MX4 America’s Top Seller


Exterior Finish: Aluminum


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Thursday, Aug 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Cover looks great and the install is pretty easy.
Style: BAKFlip MX4 Size: 5' Bed
This review is about installation on a 2025 Nissan Frontier Pro-4X. I initially ordered a competitor’s cover, but it was missing parts, so I returned it and purchased the Real Truck cover. It was so much easier to install. My wife and I did the install and A) we remained married and B) got it on in a couple of hours. We are in our 70s so a younger, more nimble person could get it installed even easier. One small screw did not fit in its base, called RealTruck and they shipped replacements immediately. I was very impressed. The cover looks great and is near flush. The tail gate closes properly. I only have one minor issue and that is the right rear slam lock does not consistently line up. I simply pull down on the side rail, if a problem occurs, and it snaps tight. Strongly recommend this product. ... show more
Reviewed in the United States on June 29, 2025 by KewlDadiJ
    • Low quality parts and tough install
Style: BAKFlip MX4 Size: 5' Bed
DON’T BUY FOR A NISSAN FRONTIER First mistake I made was ordering a “used-very good” item. Arrived not just with the noted blemished packing but also damage to the actual item and missing installation parts. Clearly no one really quality controlled the prior-retuned item. Then ordered a new one. That was the second mistake. Per multiple videos, should been a quick and easy install. Install parts really don’t work well as far as making the product properly work on my Nissan Frontier. Took close to 3 hours rather than 30 mins and still not properly installed. Rails not properly seated so the cover will not latch. Additionally, poor quality install parts that now need replacement Went to an authorized dealer for install assistance. No luck. Won’t latch properly and definitely does not fit right. There are a lot of other covers out there; pick one of those. ... show more
Reviewed in the United States on October 12, 2025 by Jeff & Hilary Gordon
    • Great Product.
Style: BAKFlip MX4 Size: 5' Bed
Had one on previous truck and have been very happy with both. Had a little trouble getting this one to lock as clamps didn’t hold the rails perfectly perpendicular but solved that by screwing them down in place. Fit on this one for my Frontier is perfect and looks fantastic. Best thing about both is that they increased my gas mileage by approximately ten percent by eliminating the drag you get with open bed. ... show more
Reviewed in the United States on June 7, 2025 by Michael S. Gould
    • Had to machine the clamps
Style: BAKFlip MX4 Size: 5' Bed
The aluminum is thick and the fit is good. The latches didn’t latch very well to the side rails. I had to bend the side rails. The clamps to the cover didn’t fit and I had to drill out the holes a little bit.
Reviewed in the United States on July 18, 2025 by WADE
    • Keeps water and would be thieves out of your stuff.
Style: BAKFlip MX4 Size: 5' Bed
Perfect fit for 2026 Frontier ProX4. Easy installation . No water leaks after several hard rains. Second purchase after having same tonneau cover for our Ford Maverick.
Reviewed in the United States on April 30, 2026 by FlMuleLady
    • Bait and Switch Bait and Switch
Style: BAKFlip MX4 Size: 5' Bed
Review Image by J. Luff
Like other reviewers have pointed out, they have changed how they build this tonneau kit, and it has a serious issue now. As you can see in the picture, the rails now pull down and away from the tonneau latch mechanism as you tighten the provided clamps. We tried installing the clamps in the recommended position from the manufacturer, but this only made the rails pull downwards even more. We had to use a set of large channel lock pliers to bend the end of the rails back up, and even now, the only way to get the rear-most portion of the tonneau to latch is to let it fall and hit hard, or reach under and provide counter-pressure to the latch. I also have to have the tailgate dropped for either of the back latches to click into place. My theory is that the manufacturer only tested this new kit on a truck that didn't have the plastic trim pieces on the top sides of the bed. The instructions also mention a shim of some sort, but no such shims were provided in the kit I received. My truck is a 2025 Nissan Frontier SV 4x4 with the convenience package, so it has the factory spray-in bed liner and plastic trim pieces on the top of the bed sides. I'd look at other models of tonneau cover if you have a 2022+ Frontier until the manufacturer addresses this major flaw with the current kit. ... show more
Reviewed in the United States on June 30, 2025 Reviewed in the United States on June 30, 2025 by J. Luff
    • Defect During Manufacturing
Style: BAKFlip MX4 Size: 6' Bed
Having issues with manufacturer. Had cover professionally installed. The 2 rods and brackets that hold the cover fully open were installed incorrectly at the factory and these do not work. Amazon gave us partial credit but wish I had returned the entire item. Been asking for new parts from BAK but not sure they will help me out as they only wanted to replace entire cover which is no longer an option. ... show more
Reviewed in the United States on July 6, 2025 by Andrew Robert
    • Best Cover
Style: BAKFlip MX4 Size: 5' Bed
This is the real deal, quality product. You can buy cheaper but you won't be happy. Outstanding product.
Reviewed in the United States on December 11, 2025 by Phillip E Morris

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