bing tracking image
  1. Tonneau Covers
  2. BAK Industries
  3. Fold-Up Tonneau
  4. Rack Compatible
  5. Hard Tonneau
  6. Matte Black
BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish

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

Retail:$1,199.87
Our Price: $1,079.88
You Save: $119.99
Tonneau Covers

Will this fit?

To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.

This item qualifies for Free Shipping
Shipping Weight: 71 lbs
Quantity: 
BAK Industries Aluminum Tonneau Covers - BAK448133
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
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 BAK448133 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (82)
  • Q & A (0)
  • Photos
  • Why etrailer?

BAK Industries Tonneau Covers

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

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.


Features:

  • 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


448133 BAK Industries BAK Flip MX4 Hard Folding Truck Bed Cover

Item # BAK448133

Installation Details BAK448133 Installation instructions

This Product Fits The Following Vehicles



California residents: click here



Customer Reviews

BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish - BAK448133

Average Customer Rating:  4.7 out of 5 stars   (82 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.

by:

Works great and 5th wheel hitch fits underneath and when folded up I can hitch up my trailer without removing cover. Only issue is the corner pieces on the end section came off and I can’t get manufacturer to help me get replacement.




by:

Good quality and relatively easy to install !!
Good value for the money too !!




by:

This cover is great. My only wish is it could fit a little tighter side to side. I've had it 1 year and it has worked and held up perfectly.




by:

I love it, I’ve owned three




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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


Comments
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.
-- Etrailer Expert Jenny N - 04/04/2022


by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


All is well....except, the caps at the joints of the folds keep popping out of place. leaving unsightly bludges in the top. With some work you can pop them back in place, sometimes easily sometimes not. Overall pleased, this is our 2nd BAKFlip and would purchase again.


Comments
I have gotten in contact with one of our installers and they suggested that if those components are popping out, they should be able to be glued in place.
-- Etrailer Expert Katrina B - 04/08/2022


by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


Easy to install, and it holds up pretty well. The straps that hold it down when partially open can get in the way and one clip got broke. You have to be careful when loading big things with the top down that you don’t snag the straps, clips or cables. The prop rods are good but can get beat up by the loading process too. Also the knobs for the prop rod keeepers can fall off in the bed when the cover is closed. You need to make sure they are tight. Over all a great product, I love that it is strong, flat and solid and makes the whole bed secure. Also handy to set things on when working around mid the truck or for carrying stuff.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


It was very easy to install even though I had never installed a tonneau cover before. One year later, the finish is still excellent. I never installed the drain tubes to divert any water from the outside but very little water ever infiltrates past the cover even when I wash the cover with my hose. One minor thing that can be an issue is when unlatching and latching the middle of the five panels, the end cap on the hinge near the bedrails sometimes disengages. The cover still closes if I didn't notice the disengagement but I'll just flip back and tuck the end cap back in to the hinge, no big deal. Overall very sturdy and durable. My neighbor wants one now.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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!




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


Really nice cover. One gripe is the cover is not long enough for the gaskets to fit o. The front edge and on the tailgate edge.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


Easy, clean install; fits great on 2022 F-150 with Adarac Aluminum Series Custom Truck Bed Ladder Rack.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


The cover has been great. I would buy it again. The only gripe from me is that for some unknown reason, one screw rusted ( as shown in the attached photo ). Why one, and not the other 3 ?? who knows...




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


Installation was easy, although it has never aligned perfectly. It has worked well, although it has been designed to be usable in the open position with the last panel (closest to cab) closed and the folded portion strapped into position. I bought it specifically for that so I could access my 5th hitch and tow, with a portion covered. It seems to be stressful on the cover to use it this way…all of the foam bumpers have worn off and have even put some dents in the cover. It’s a great concept, but could use some design tweaking.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau 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.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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.


Comments
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.
-- Etrailer Expert Sierra K - 01/20/2022


by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


This is my second purchase from etrailer. I have purchased two hard Tonneau covers for two separate trucks. I have been very happy with both purchases and have nothing but excellent service from etrailer.




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


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




by:

Review from a similar BAKFlip MX4 Tonneau Cover in Tonneau Covers


Simply the best cover out there
Simple
to install, fits great and is weather tight.
A purchase that won’t disappoint.



25
82
Show More Reviews

See what our Experts say about this BAK Industries Tonneau Covers

  • What is the Difference Between the BAKFlip G2 and MX4 for 2020 GMC Sierra 3500 Short Bed
    The main difference between the G2 # BAK226133 and the MX4 # BAK448133 is that the MX4 can remain latched in position when latching the tailgate. With the G2 the cover must be unlatched to latch the tailgate. This can become kind of a pain if you're leaving the cover in position for an extended period, but constantly at the tailgate. The G2 also has a glossy finish on it, while the MX4 has more of a matte finish and is generally a more sturdy cover when it comes to holding up over time. At...
    view full answer...
  • Comparing The BAKFlip F1 And BAKFlip MX4 For The 2020 GMC Sierra 2500 With 6-3/4 Bed
    The BAKFlip F1 Hard Tonneau Cover - Folding - Aluminum and Fiberglass # BAK772133 and BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish # BAK448133 are very similar but there are a few minor differences. The F1 has a rough texture that tends to hold up better against various conditions and does not get easily scratched or dented. The MX4 has a smoother appearance and texture and does not have a rough look or feel to it. I think the F1 looks better and it holds up better...
    view full answer...
  • Differences Between BAK BAKFlip G2 and MX4 Hard Folding Tonneau Cover for 2022 GMC Sierra Short Bed
    In a nutshell, the MX4 part # BAK448133 is of a slightly higher quality than the # BAK226133 G2. The MX4 has a 5 year warranty versus the 3 year for the G2. The MX4 has a matte finish that does a better job of hiding imperfections and scratches than the gloss finish used on the G2, and the MX4 just feels a bit more substantial as if it'd hold up a bit better over time. Also, the rear seal of MX4 allows you to close the tailgate whether the tonneau is open or not. With the G2, the tonneau...
    view full answer...
  • Is BAKFlip MX4 or F1 Tonneau Cover Better for 5th Wheel on 2022 Chevy Silverado 3500 Short Bed
    While there are minor differences between the two BAKFlip tonneau covers for your 2022 Chevy Silverado 3500 with a 6-1/2 foot bed, for the purposes of using either cover when towing a 5th wheel, there is no real advantage with either the BAKFlip MX4 Hard Tonneau Cover # BAK448133 or BAKFlip F1 Hard Tonneau Cover # BAK772133. The biggest difference between the two is that the F1 has more robust panels, made out of a reinforced polymer (a type of plastic designed for durability) and measuring...
    view full answer...
  • Rightline Truck Bed Tent Compatibility With A 2022 GMC Sierra 3500 With A BAKFlip MX4 Tonneau Cover
    The Rightline Truck Bed Tent # RL110730 attached more to the outside of the bed so you'll have no issues using it on your 2022 GMC Sierra 3500 in conjunction with your BAKFlip MX4 # BAK448133 tonneau cover.
    view full answer...
  • Do the Truck Hero TS Rais Work with the Gator EFX Covers
    Yes the TS Rails for Truck Hero Elevate Rack System part # TH65FR will work out well with your Gator EFX Tonneau Cover. The design of the Gator EFX is very similar to that of the BAKFlip MX4 Hard Tonneau Cover part # BAK448133 which is confirmed to fit with the TS Rails.
    view full answer...
  • Rapid Switch Pro On A 2021 GMC Sierra 2500 HD with 610 bed with Bakflip MX4
    The BakFlip MX4 is compatible with the Rapid Switch Ladder Rack # RS77FR. These systems work well together and the Rapid Switch System is the same for the 8 foot and 6-3/4 foot bed. For your tonneau cover, it all depends on the length of your bed. If you're wanting to get the BakFlip MX4 and you have a 8 foot bed, get this one # BAK24FR and if you have the 6-3/4 foot bed get this one # BAK448133. The rails are long enough to go from the bulkhead of the bed to the tailgate. I have an installation...
    view full answer...
  • Adarac Ladder Rack Compatible With The BakFlip Mx4 Tonneau Cover On A 2021 Chevrolet Silverado 2500
    If you have the BackFlip MX4 # BAK448133 tonneau cover on your 2021 Chevrolet Silverado 2500 then you can use the Adarac Pro Series Ladder Rack # A4003991. You will need to get this rack because the towers holding the crossbar up is completely upright. These only come in silver. This one comes in black # A4004148 but won't work because of the towers tapering inward. You will most likely have contact with your first panel on your tonneau cover with the tower when you're folding it up.
    view full answer...
  • Thule TracRac SR Compatibility With BAKFlip MX4 Folding Tonneau Cover
    Technically, the Thule TracRac SR Sliding Truck Bed Ladder Rack w/ Cantilever - 1,250 lbs, part # TH44RE, will fit your vehicle with the MX4 tonneau cover. But you will have to shift the uprights of your ladder rack anytime you open your tonneau cover. The overlap of your BAKFlip MX4 Hard Tonneau Cover - Folding - Aluminum - Matte Finish, part # BAK448133, is not the reason the Thule TracRac SR is not the best fit for your 2022 Chevrolet Silverado 2500. Your tonneau cover is a tri-fold....
    view full answer...
  • Does BAKFlip MX4 Tonneau Cover For 2022 Chevy Silverado 2500 Standard Bed Fit w/ Adarac Ladder Rack
    Yes, the BAKFlip MX4 tonneau cover is absolutely compatible with the Adarac Aluminum Series ladder rack on your 2022 Chevy Silverado 2500. The correct part numbers for the cover and rack that fit your truck are the following: - BAKFlip MX4 Hard Tonneau Cover # BAK448133 - Adarac Aluminum Series Custom Truck Bed Ladder Rack - Aluminum Finish # A4003992 or Matte Black # A36HG The MX4 installs inside your Chevy's bad rails, while the Adarac uses the stake pocket mount on top of the bed...
    view full answer...

Do you have a question about this Tonneau Cover?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate tonneau cover information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Tyler C
Edited by:
Tyler C
Employee Zach D
Video Edited:
Zach D
Employee Mark S
Written by:
Mark S
Employee Noah M
Updated by:
Noah M

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-800-940-8924