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RealTruck

RealTruck BAK BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448329 | Fits 2015-2020 Ford F-150 5' 7" Bed (67.1")

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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Mar 23
Order within 11 hours and 27 minutes
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Style: BAKFlip MX4


Size: 5' 7" Bed


Features

  • Fits 2015 - 2020 Ford F-150 5' 7" Bed (67.1")
  • Made in the USA with Global Materials
  • ULTIMATE SECURITY | The BAKFlip MX4 tonneau cover has durable aluminum panels that automatically latch as the cover is partially or fully closed, and is fully locked once your tailgate is closed
  • STYLISH MATTE FINISH | Featuring matte-finished aluminum panels, protecting against marks, scratches and UV damage; as well as premium upgrades to the perimeter seals and hardware
  • 100% BED ACCESS | Operate this cover closed, folded or flipped up, all without covering the 3rd brake light. Paired with a dual action tailgate seal for tailgate operation open or closed

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: BAKFlip MX4


Exterior Finish: Durable Matte


Material: Aluminum


Lock Type: Tailgate


Brand: ‎RealTruck


Style: ‎BAKFlip MX4


Exterior Finish: ‎Durable Matte


Material: ‎Aluminum


Lock Type: ‎Tailgate


Manufacturer: ‎BAK


UPC: ‎788750013074 819275042376 819275030397


Automotive Fit Type: ‎Vehicle Specific Fit


OEM Part Number: ‎448329


Global Trade Identification Number: ‎97, 76


Model: ‎BAK448329


Item Weight: ‎55 pounds


Product Dimensions: ‎69 x 23 x 8.5 inches


Item model number: ‎448329


Is Discontinued By Manufacturer: ‎No


Manufacturer Part Number: ‎448329


Date First Available: June 2, 2016


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Mar 23

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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Similar Products

Top Amazon Reviews

    • Great looking and easy to install
Style: BAKFlip MX4 Size: 5' 7" Bed
This cover is easy to install. High quality and great bed access. I always used soft tops before to have full bed access. This hard cover gives you ~95% bed access - which for me fits most all my needs. The only downside I noted is it did sit slightly lower that my previous soft tops (like < 1/4 in), but no major issue there. ... show more
Reviewed in the United States on October 13, 2025 by K Taylor
    • Good design
Style: BAKFlip MX4 Size: 5' 7" Bed
Gave a 4 for easy to install - only because some fiddling around is required to get the right fit and an extra pair of hands is virtually essential at a couple of points, otherwise it's pretty simple. Also when opened up all the way against the cab you have to put the rubber bumpers in the middle because the 2020 F150 cab rear is curved. Placing them at the towards the outer edges as shown in the manual will not work. Gave a 4 for water resistance - looks like it seals well but it has not rained here since I installed it. However, what are the drain tubes for? And some seals for where they go through the holes drilled in the bed plugs would be a good idea. Seems like water would get in when driving in rain. I may use some black silicone. (Tip - remove the plugs and drill them in a vice or clamped to a bench - and a hole saw works very well instead of one of those expensive cone bits they show. Don't try regular, Forstner, or flat blade bits!!) Delivery was quick. Packaging was great. Install took about an hour without rushing. Looks good and performs well. Should be very durable. It's easy to use and secure with the tailgate closed and locked. Love that it does not stick up above the bed sides. Very solid. No rattles or vibrations. Overall a great product. The price could be lower. It seems a lot for the amount of materials and manufacturing involved, but it's fairly competitive with similar higher end products of the same quality. Average gas mileage is creeping up again with only 500 miles on the new truck so far. (No, I didn't get it from the Ford dealer - they wanted almost 40% more - way over list price! And I'm not paying interest on it.) ... show more
Reviewed in the United States on April 28, 2020 by Corinne Richards
    • Great Fit and Easy Install
Style: BAKFlip MX4 Size: 5' 7" Bed
I read a lot of reviews on other sites that said the BakFlip was a top rated cover but saw some reviews that talked about scratches on their cover and metal shavings all in the box and over the cover. The cover I received had no metal shavings, no scratches and was packed extremely well. I was very pleased with the overall quality, handling and packaging of the cover. I have not used the cover yet in the rain so I am not sure how well it will keep the bed dry. I have a 2018 Ford F150 and I believe it will keep the rain out very well except for maybe the corners. The front two corners can easily be corrected with just a little black caulk but with the design of the tailgate not sure if you will ever keep the back two corners perfectly dry with any cover. My only issue with the cover is two parts. The first is the clamps that hold the cover to the truck. They really don't fit very well. You can tell they are a generic one size fits all clamp. They keep trying to twist when you install. I believe they will work just fine but I would suggest rechecking after some time. The second issue is there is a small foam bumper pad on the top of the cover, on each side, near the front. These are for when you fold up the cover all the way against the back glass of your truck, the cover will rest on these foam bumper pads instead of the top of the cover. The issue is they are just a foam pad that sticks to the top of the cover. I don't think these will last long. Will probably have to find something else later on to replace them with. For just a little extra the manufacture should put something here that will last. ... show more
Reviewed in the United States on May 17, 2019 by Michael S.
    • Fit and Security
Style: BAKFlip MX4 Size: 5' 7" Bed
Easy to install by yourself. Fit I excellent if you take your time, pay attention to detail and strive for a professional look. It took me about forty-five minutes to install by myself. Only common hand tools needed to install. When the order was received everything was inventoried for correct count and damage. One piece of hardware was missing and I immediately notified the manufacturer. I spoke with a representative in order to have the product corrected. The missing part was determined and I was assured the part would be sent out the next day. Well two months later I am still waiting! This cover was registered for warranty purposes the day I received it. I do like the look of the cover and the protection it offers. One thing I would recommend has to do with the opening of the panels. The way it operates you have to pull the release on both sides of a panel in order to open it. This is a challenge on the middle panel and the panel that is closest to the cab. In order to open these two panels is either get in the bed and grasp both cables (right and left side) to disengage the locks or have a person on the opposite side of the truck to assist you. Overall this is a very good and well made product. I have been on the interstate and rough roads, the unit stays in place, no movement. I would highly recommend this product to someone looking for a well made quality product. Bak-Flip I would have given you five stars if you would have been responsive to assuring I received the missing parts. ... show more
Reviewed in the United States on May 28, 2023 by Randy F

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