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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

Item # BAK48204
Our Price: $1,249.99
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 BAK48204 can be ordered online at or call 1-800-940-8924 for expert service.
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  • Reviews (101)
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BAK Industries Tonneau Covers - BAK48204

  • 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

448204 BAK Industries BAK Flip MX4 Hard Folding Truck Bed Cover

Replaces 48204

Installation Details BAK48204 Installation instructions

This Product Fits The Following Vehicles

California residents: click here

Customer Satisfaction Score:

Customer Reviews

BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish - BAK48204

Average Customer Rating:  4.7 out of 5 stars   (101 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.

Dodge Ram Pickup

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.


I like the tonneau cover a lot! It's sturdy and helps keep belongings out of sight, out of mind. I had to cut the rail as it was about an inch too long for my truck but besides that the install was easy.

Etrailer Expert

Sierra K.


I reached out to the manufacturer and they said if you install the rails with the tailgate closed then the rails would sit on top of the tailgate, which is correct.


The best truck cover I’ve ever had.

2012 Dodge Ram Pickup

by: 04/20/2023


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.


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 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


Easy to install. Doesn't leak. Easy to clean, and seems to have improved my fuel mileage a bit. I am happy and would highly recommend this cover. Fits my 2018 Silverado perfectly.


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.


Cover went on easy and looks good on the truck. We put it on our 2020 Colorado which we tow with our motor home. It works great for extra secured storage. The only problem was with the rubber bumpers on the bottom and the two on top , fell off as soon as I opened the box. Not a big deal just had to use a little gorilla glue on them and all has been good.


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


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


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


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.


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.


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


Love the MX4 ...Took a little longer to install but looks great...


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.


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.


This is the second BAKFlip i've owned they vare great,going thru etrailer is an easy process


I am very happy with my BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish - BAK48203.
And the service I received in its regard was top-notch. It did arrive with a non-functioning blemish but I was compensated by the company, immediately. Also, a part broke shortly after I installed it and again, the company stepped up.
As for the tonneau cover itself:
•it folds open and closed easily as advertised,
•I can stand on it if needed,
•it keeps out the rain (I've run it through car washes too, and the contents of the bed remain dry,
•it was easy to install
•I love that concern for locking the bed by closing before/after tailgate is not an issue.

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Info for this part was:

Employee Tyler C
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Employee Jameson C
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