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  1. Tonneau Covers
  2. BAK Industries
  3. Fold-Up - Hard
  4. Flush Profile - Inside Bed Rails
  5. Rack Compatible
  6. Aluminum
BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish

BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish

Our Price: $1,199.99
You Save: $41.44
Tonneau Covers

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Shipping Weight: 71 lbs
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Get style and versatility with this heavy-duty, all-aluminum tonneau. Quad-fold cover sits inside your vehicle's bed rails and secures upright for unrestricted bed access. Tailgate opens and closes with cover up or down. Matte black finish. Great Prices for the best tonneau covers from BAK Industries. BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish part number BAK48330 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (99)
  • Q & A (0)
  • Photos

BAK Industries Tonneau Covers

  • Fold-Up - Hard
  • Flush Profile - Inside Bed Rails
  • BAK Industries
  • Rack Compatible
  • Aluminum
  • Matte
  • Opens at Tailgate

Get style and versatility with this heavy-duty, all-aluminum tonneau. Quad-fold cover sits inside your vehicle's bed rails and secures upright for unrestricted bed access. Tailgate opens and closes with cover up or down. Matte black finish.


  • Custom-fit tonneau cover protects your cargo and your vehicle's bed from the elements
    • Aerodynamic style reduces wind drag, improving gas mileage
  • Quad-fold design allows for partial or full truck bed access in seconds without having to remove cover
    • Prop rods let you secure folded cover in upright position so you can drive with truck bed completely open
    • Integrated buckle system lets you secure the cover in the folded, flipped up, or closed position
  • Low-profile cover sits inside your truck bed rails
    • Compatible with stake-pocket-mounted accessories and raised side rails
  • Automatically latching panels create a secure truck bed when tailgate is closed and locked
    • Rear seal lets you open and close tailgate with cover open or closed
  • Matte black rubber seals and built-in drainage system help to keep water out of bed
  • 1/2" Thick, rustproof aluminum panels are sturdy and durable
    • Premium density foam core adds strength
    • Cover rated to hold up to 400 lbs of evenly distributed weight
  • Matte black finish is resistant to scratches, scuffs, and UV rays
  • Aircraft-grade, rustproof aluminum rails with black powder coat finish create base for tonneau
  • Easy, no-drill installation
    • Frame rails clamp to the inside of your truck bed side rails
    • Included bolts secure front hinge rail to frame rails
  • Compatible with BakBox2 (sold separately)
  • Made in the USA
  • 5-Year warranty

448330 BAK Industries BAK Flip MX4 Hard Folding Truck Bed Cover

Replaces 48330

Item # BAK48330

Installation Details BAK48330 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Reviews

BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish - BAK48330

Average Customer Rating:  4.7 out of 5 stars   (99 Customer Reviews)

Get style and versatility with this heavy-duty, all-aluminum tonneau. Quad-fold cover sits inside your vehicle's bed rails and secures upright for unrestricted bed access. Tailgate opens and closes with cover up or down. Matte black finish.


So after a year I am still loving this bed cover. Had the fiberglass version for my 2013 F-150 and loved it as well, that's why I purchased this one for my 2019 Super Duty, it was also the first accessory I purchased for it because I was so used to my other one and knew I couldn't live without it. I never installed the drain tubes on either covers and still haven't had water get it my bed. Also the folks at etrailer are always awesome! Thanks again!


I am a huge fan of the BAKFlip. The installation was pretty straight forward and easy. Anybody with moderate mechanical ability can install. I think it took less than 2 hours. I live in a heavy snow area and had more than 24” of snow on it at one point and the product performed flawlessly.


the bedcover finally came in.
Few pictures
of it installed.


Solid performance. Only issue is with the glue holding the pads is failing

Etrailer Expert

Jenny N.


You mentioned that the glue holding the pads are failing. I wanted to see if you would be able to send a picture to show the locations.

2017 Ford F-250 Super Duty

It's a straight forward assembly but photos of the assembly steps would be better than the illustrations.
NOTE: This model allows you to open and close the tailgate without lifting up the cover. The other models require you to lift the cover so the tailgate won't damage it.

Martin Z.


Great cover holds up really well, no problems

2020 Ford F-250 Super Duty

I love the design of it and it is rock solid

2022 Ford F-250 Super Duty

I am very satisfied with my Tonneau cov er.

2017 Ford F-350 Super Duty

After a year with my BAKFlip MX4 tonneau cover, I'm completely satisfied, in my opinion, that I purchased the best rigid and secure cover for my 2017 F350 Super Duty truck, with 6'-9" box.


Excellent tonneau, easy install, quality product. Installed a year ago, no problems, still looks like new


Keeps out the water well. However if you do a lot of dirt roads like I do a lot of dust still gets in. No regrets buying it.


Great product, a little pricey but you get what you pay for. It keeps objects save and protected from the weather. Very well built and have had no issues.



Looks great and was easy to install


I have owned this cover for over a year and it has been excellent. It keeps the bed fairly dry as expected and I have had no mechanical issues with it as it still performs like new. I would say the only improvement I would suggest is better foam weather striping for the front of the bed as the original never stuck to the spray in liner very well and eventually came lose and then I just swapped with some similar weather striping I bought locally.


The cover functions ok. The tailgate leaks quite a bit. The manufactured edges that where cut were sharp and not painted or treated. The weather strip along the edges has already discolored/faded. Disappointed in the fading and less than ideal sharp edges. Somewhat expected leaks, but not this much. Average at best rating, especially for the price.


Well made cover. A lot sturdier than I thought it would. Its not full proof so water does get in the bed but it's minimal. The cover partially blocked my tool box which sit in the bed, so I removed the tool box cover for easy access.


Overall, I am very pleased with my BAKFlip MX4. It has held up well after 1 year. It works well and looks good. It matches my matte black accessories and trim. It was fairly easy to assemble but I did have some tight fitment issues near the cab where the cover connects to the rail. I really like the security of the hardtop and access through the tailgate. Water is generally kept out, but sometimes there are water drips near the tailgate depending on the angle parked. So this cover keeps the bed *mostly* dry.
etrailer was very fast to deliver my cover, and it came in good condition.


I installed the BAKFlip MX4 in my RAM 2500 Crewcab has the 6' 1/2 short bed, drived 300 miles now. good product, open and close the tailgate without lifting up the cover


This tonneau cover can be installed by one person. It works great. It is water proof in the rain.


This is the third MX4 that I have owned. This one is on Ford’s Maverick. The first two fit well but not perfect. I don’t really know if the slight issues were the fault of the truck or the cover. This cover is the best yet. Absolutely no leaks!! The fit to the tailgate is very uniform!! When ever I need a cover, I don’t even look at te competition. These are great covers.


I really love the bakFlip cover. It locks up all my stuff when we are on the road. I really like the looks too.


I love the cover, very sturdy and has held up very nice for 1 year. The one issue is, I have a long bed Ram and when I fold it up against the cab, it covers the camera for the bed. This is a design flaw and if you use the bed camera when you have a load in the bed and the cover is folded all the way up, you can't use it.


After a year of using the cover I found that there are a few things that could be improved and you can do some of these yourself.
The knobs for the cover that actually hold it into the bed-vibrate loose. I added my own lock washers. The poles that you use to hold the cover up when the cover is raised up against the back window-they also vibrate loose-so often that I just removed them and keep them under my seat. The little u-clip pole holders for the poles when not in use-they are too weak-often letting the poles jump out or fall out during normal road driving.
The cover itself is not waterproof --it sheds water away mostly however enough gets into the bed that you can not trust your items to be dry. Bag important stuff to keep it dry.
The rear weather seal slides back and forth too easily--sometimes working itself out about 2 inches until you see it and slide it back into place--i addenda small amount of silicone to stop this from moving.
The cover is strong, looks good and is mostly what I was looking for. Unfortunately I would not buy this again-even more because you have to relocate the bed accessory rails-which then limits the items you can buy for your truck because they are designed for the rails to be in the factory positions.
My next cover will be a roll up so that it allows visibility out of the back window. When this cover is flipped up to its final position it completely blocks the rear window. When I was looking at covers-my thought was well its the coolest looking cover and I can deal with not seeing out the back window--well that has changed. It is not practical. The price is high and there are many other options out there that are. My soft roll up tonneau cover was great-waterproof and I could have bought 6 of them for this price. If one was damaged it would have been better to just throw it away and order a replacement. Sorry guys-look elsewhere for a better cover.


I've had the cover for one year now and the cover has gone through the worst California winter weather for the last 3o years. It kept my stuff 99% dry! It's not 100% leakproof and that was expected but given the conditions esp during rainy season, it has performed above expectations.


Excellent cover for the truck. Easy straight forward install. Built to outlast the truck.

Show More Reviews

See what our Experts say about this BAK Industries Tonneau Covers

  • How Waterproof is BakFlip MX4 Tonneau Cover for 2020 Ford Super Duty 6-3/4 ft Bed
    The BakFlip tonneau cover part # BAK48330 that you referenced will do a great job keeping most of the water out of your truck bed, but it's not totally waterproof so there's a possibility water will still get in during a heavy downpour. It has a drain system too that helps direct the water out of the truck as well.
    view full answer...
  • Can You Drive With BAKFlip MX4 Hard Tonneau Cover Folded Against Up Cab of 2020 Ford F-250 Short Bed
    Yes you can drive your 2020 Ford F-250 Super Duty with the BAKFlip MX4 tonneau cover flipped up against the cab. The correct part number for your short bed '20 F-250 is the following: - BAKFlip MX4 Hard Tonneau Cover # BAK48330 The BAKFlip MX4 # BAK48330 is actually designed to do just this; I have added a cut out from the directions which show how to do this. There is a prop rod that gets secured to a plate underneath the cover which ensures it gets held firmly in place so you can have...
    view full answer...
    Image 1 for
  • What Is The Dimension Of The BackFlip MX4 When Folded Up On A 2017 F-250 6-3/4 Foot Bed?
    The BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish, # BAK48330, is a quad-fold cover. I reached out to my contact at BAK industries and for your 2017 Ford F-250 Super Duty with 6-3/4 foot bed, the depth of all the folds together is 3-4 inches. Each panel is 1/2 inch thick but there are also the support rails. They were unable to give me the dimension exactly for this specific cover when resting on the panel closest to the cab, but that would remove a 1/2 inch. ...
    view full answer...
  • How Do I Solve Water Leakage on My BAK Tonneau Cover?
    I went ahead and brought your issue to my contact at BAK about your BAK tonneau cover, and he confirmed that you can either trim the hose or shove it through the hole. He also recommended using silicone around the nipple to deter leakage.
    view full answer...
  • Does BAKFlip MX4 that Fits 2019 Ford Ranger 5 ft Bed Also Fit with Bed Liner
    Yes, the BAKFlip MX4 # BAK448332 that fits your 2019 Ford Ranger 5 foot bed does also fit with bed liners like you mentioned.
    view full answer...
  • BAKFlip Tonneau Cover that Fits 2006 Ford F-350 Long Bed
    Hey Robert, so we have a BakFlip tonneau that does fit your 2006 Ford F-350 long bed with the part # BAK26304 but the part # BAK48330 that you referenced fits short bed Ford trucks that are much newer than yours so this won't fit at all. I attached a review video for this cover for you to check out as well.
    view full answer...
  • BAKBox 2 Collapsible Truck Bed Toolbox That is Compatible With BAKFlip Tonneau on 2017 Ford F-350
    The BAKFlip MX4 Tonneau Cover # BAK48330 is a fit for your 2017 Ford F-350 and is compatible with the BAKBox 2 Collapsible Truck Bed Toolbox # BAK92501. The box is 60" long x 10" wide x 10" deep and has a weight capacity of 400 lbs and will clamp onto your tonneau's frame rails with the hardware it comes with.
    view full answer...
  • Comparing BAK Tonneau Covers MX4 and G2 for 2017 Ford F-250
    For your 2017 Ford F-250 the Bak MX4 part # BAK48330 and the BAKFlip G2 # BAK26330 are both pretty similar in that they are folding aluminum tonneau covers that will fit and work great, but there are a few differences. The biggest being that the G2 has three sections that fold and the MX4 has 4. The MX4 is also compatible with the BakBox which is a storage box, part # BAK92100. The MX4 also has a weight rating of 400 lbs evenly distributed on it while the G2 isn't rated at all.
    view full answer...
  • Best Ladder Rack for 2019 Ford F-250 Short Bed with BAKFlip MX4 Hard Tonneau Cover Installed
    Yes, the Adarac Pro Series Custom Truck Bed Ladder Rack part # A4000952 will work on a 2019 Ford F-250 with BAKFlip MX4 Hard Tonneau Cover part # BAK48330. In fact, the Adarac Pro Series is actually the only ladder rack that will work with the BAKFlip MX4. The reason for this is because the uprights on the Adarac Pro Series are straight so they will not interfere with the panels on the BAKFlip MX4. Unfortunately, the Adarac Pro Series is not offered in black but you could paint this yourself...
    view full answer...
  • 2022 Ford F-250 Short Bed - Using The BAKFlip MX4 With A Demco Sliding 5th Wheel Hitch
    The BAKFlip MX4 Tonneau Cover # BAK48330 for the 2022 F-250 short bed has 4 panels. While you are using your Demco Autoslide 5th Wheel Hitch # DM8550024 you will be able to keep one panel laying flat on the bed. There are tow ways you can store the cover while towing and you can see examples of each below.
    view full answer...
    Image 1 for
  • Recommended Tonneau Cover for 5th Wheel Towing with 2022 Ford F-350 Short Bed
    According to BAKflip, when the # BAK48330 is folded up against the rear of the truck cab, it'll reach into the bed by about 9 inches. Since the cover sits against the back of the cab when folded up and reaches most of the way up to the roof, it would be a little too close for comfort to the front corners of your 5th wheel during turns. I'd rather see you use a retractable cover like the Retrax # RT60383 which will not extend up past the top of the bed sides when fully retracted, so it...
    view full answer...
  • Recommended Aluminum Folding Tonneau Cover for 2017 Ford F-250 Super Duty
    The BAKFlip G2 Hard Tonneau Cover # BAK26330 referenced in your question is a great choice and is confirmed to fit your 2017 Ford F-250. I spoke with my contact at BAK Industries and he stated that they have not heard of any issues with the bed rails on the Ford or any other truck buckling because of the installation hardware on the unit. He also confirmed that there is no problem at all with the new aluminum beds on the Ford trucks. Most likely the customer with the issue you stated over-tightened...
    view full answer...
  • Recommended Ladder Rack for a 2023 Ram 1500 w/ a MX4 Tonneau Cover and a 5-1/2 Foot Bed
    Yes, there is. Since your Ram 1500 has the BAKFlip MX4 item # BAK448227 you will want the TruXedo Elevate Truck Bed Rack System item # TX96NV. I checked with our vendor and this ladder rack is confirmed to work with the MX4 covers. It mounts to the top of your bed rails instead of inside like most ladder racks and where your cover mounts. The TruXedo Elevate Truck Bed Rack System item # TX96NV has a 500 lbs capacity. The bars are 3-3/4" wide x 1-1/2" tall. The uprights are adjustable...
    view full answer...
  • Recommended Removable Ladder Rack Compatible With A BAKFlip MX4 Tonneau Cover
    While we no longer carry the Rapid Switch System ladder rack you're referring to, we do still have a compatible option with the Adarac Pro Series Custom Truck Bed Ladder Rack # A76ZR. This ladder rack mounts in the stake pockets and sits on the bedrails to allow for compatibility with tonneau covers that sit inside of the bedrails, like your BAKFlip MX4 # BAK48426. The towers can be easily loosened in the track and slid back and forth along the bedrails to fit your hauling needs and then...
    view full answer...
  • Will The Thule TracRac Ladder Rack Work With A BAKFlip MX4 Tonneau Cover On A 2023 Toyota Tacoma
    The Thule TracRac SR sliding ladder rack, which mounts in the stake pockets of the bedrails, would be compatible with the BAKFlip MX4 Hard Tonneau Cover # BAK48426. Thule unfortunately does not have a confirmed fitting TracRac SR available for your 2023 Toyota Tacoma though. The other versions of the TracRac all mount in the same space as the rails for the cover so they wouldn't work together. You would need to use a ladder rack like the Adarac Pro Series Custom Truck Bed Ladder Rack...
    view full answer...
  • Recommended Ladder Rack For 2016 Chevy Colorado 5' Bed with BAK MX4 Tonneau Cover
    Yep! Since the BAK MX4 # BAK48126 you have installed in your 2016 Chevy Colorado with the 5' bed installs inside of the bed rails there is indeed a ladder rack option for you. I recommend the Adarac # A73DJ which'll work perfectly with your tonneau cover installed, and is pretty easy to install while being a very solid rack for your truck.
    view full answer...
  • Ladder Rack that Can Fit 2022 Ford F-250 with BAKFlip MX4 Tonneau
    Yes, due to how the BAKflip MX4 # BAK48330 you have on your 2022 Ford F-250 short bed installs the only ladder rack that's going to work is the Adarac Pro Series part # A4000952 which installs through the stake pockets and has vertical uprights that will allow the cover to fold up. Uprights that angle in would interfere with folding panels.
    view full answer...
  • What Ladder Rack Will Work with the BAKFlip MX4 Tonneau Cover on a 2020 Ford F-350 Super Duty
    We do have a ladder rack solution for your 2020 Ford F-350 Super Duty with the BAKFlip MX4, part # BAK48330 for short bed or # BAK48331 for long bed, but you are correct that the vast majority out there use a clamping system which makes them incompatible with most tonneau covers. For your application you can use the Adarac Pro Series Ladder Rack, part # A4000952 for short bed or # A4000958 for long bed, because it uses an anchoring system with the stake pockets instead of a clamping system...
    view full answer...
  • Thule Ladder Rack Compatible with the BAKFlip MX4 on a 2013 F-350 Short Bed
    It looks like you have the BAKFlip MX4 for the 2013 Ford F-350 short bed, part # BAK48310. This tonneau cover does install inside the bed rails, so using the Thule TracRac SR Sliding Truck Bed Ladder Rack that is compatible with your truck, part # TH43003XT-510, is a great option since it installs over the bed. I've linked to a video review of this ladder rack for you to look at. As for the panels of the tonneau cover hitting the legs while folding, that may still be somewhat of an issue....
    view full answer...
  • Recommended Ladder Rack For 2011 Toyota Tundra 6-1/2 Bed With BAKflip MX4 Tonneau Cover
    I recommend installing the Thule TracRac SR Sliding Truck Bed Ladder Rack # TH43002XT-610 on your 2011 Toyota Tundra. This system will fit your 78" bed. It attaches via the stake pockets and will still allow you to use the BAKFlip MX4 Hard Tonneau Cover # BAK48410 which mounts on the inside of the bed rails. The SR rails allow you to easily remove the ladder rack and also position the towers where needed along the rails.
    view full answer...
  • Tonneau Cover and Ladder Rack that Fits Together for 2017 Ford F-250 Short Bed
    You would be able to install the TracRac SR Ladder Rack part # TH43002XT-508 with the BAK MX4 Tonneau Cover part # BAK48330 but the issue will be that the base rails of the ladder rack are going to interfere with the tonneau cover folding up. Sometimes you get lucky and the rails don't interfere but since it's unknown and such a close call it's hard for us to guarantee it either way. Instead we do know that the BAK Revolver X2 tonneau cover part # BAK39330 does allow a TracRac sliding...
    view full answer...
  • Recommended Tonneau Cover And Ladder Rack For A 2023 Nissan Frontier
    The BakFlip MX4 and TruXedo Elevate Ladder Rack System both do work together but they wouldn't be compatible with the Utili-track system in the bed. If you remove the Utili-track system from the bed then you'd be able to install both the MX4 # BAK94AV and Elevate # TX38NV. There currently aren't any other compatible combinations available for both a tonneau cover and ladder rack for your 2023 Nissan Frontier.
    view full answer...
  • Recommended Ladder Rack For 2020 Ford F-150 With BAKFlip MX4 Tonneau Cover
    Since the BAKFlip MX4 Hard Tonneau Cover # BAK48329 mounts inside the truck bed rails of your 2020 F-150, you can install a ladder rack that mounts on top of the truck bed rails. I recommend looking into the Thule TracRac SR Sliding Truck Bed Ladder Rack # TH43002XT-508. This is confirmed to work in combination with the BAKFlip MX4 cover and the upright arms of the ladder rack are vertical, not slanted, so the cover will be able to fold up properly. The Thule TracRac is adjustable and...
    view full answer...
  • What Tonneau Cover Fits a 2024 Ford F-250 w/ a 6-3/4 Foot Bed and a Thule TracRac SR Ladder Rack?
    For a 2024 Ford F-250 with a 6-3/4' bed, you will want the BAKFlip MX4 Hard Tonneau Cover item # BAK48330. This folding tonneau cover mounts inside the bed rails of your Ford truck which allows the Thule TracRac SR Sliding Truck Bed Ladder Rack item # TH43003XT-785 to install inside the stake pockets.
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Tyler C
Edited by:
Tyler C
Employee Jacob T
Video by:
Jacob T
Employee Dustin K
Video Edited:
Dustin K
Employee Zach D
Video Edited:
Zach D
Employee Hayden R
Installed by:
Hayden R
Employee Wilson B
Updated by:
Wilson B
Employee Matthew S
Updated by:
Matthew S
Employee Noah M
Updated by:
Noah M
Employee Ronnie R
Written by:
Ronnie R
Employee Conner L
Test Fit:
Conner L

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