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BAK BAKFlip MX4 Folding Tonneau Cover BAKFlip MX4 Folding Tonneau Cover - 448130

By BAK
609 Reviews
Free Shipping
$1,199.87
List Price
$1,079.88
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Free Shipping - Ships by 12/13/2022
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Product Info
Features:
  • Click here for Installation Instructions (PDF)
  • Which BAKFlip Tonneau is best for me? (PDF)
  • Premium-density foam core is 1.5x thicker than in the standard BAKFlip G2 Tonneau and supports up to 400 lbs of evenly distributed weight
  • Matte black finish offers the highest level of UV-resistance
  • Special instructions are included for the most watertight fit on the market
  • 3rd brake light remains visible when cover is propped open
  • No-profile panels fold up in seconds, allowing quick, full bed access
  • Sturdy prop rods allow you to drive at highway speeds with the cover open
  • An integrated buckle system secures the cover in the folded position for 5th wheel towing or partial bed protection with no bungees or additional straps
  • Compatibility with most bed extenders, under-the-rail bed liners, under-the-rail toolboxes, bed rails, and truck racks
  • Tailored to your truck bed (shorter sizes feature 3 flip panels, while extended beds boast 4 panels for complete coverage)
  • No-drill installation takes 30 - 45 minutes and requires only a few basic tools
  • The Bak MX4 features an industry leading 5 year warranty
  • New design updates as of 10/7/2019: Matte finished cab corner caps, rail-end caps, clamps, and elevator bolts for an even more refined look and feel
Description:

Whether you’re transporting a load of furniture to a new house or want to keep your gear out of the weather and away from prying eyes, your stuff deserves the ultimate in open-road protection – the BAK BAKFlip MX4 Folding Tonneau Cover, of course.

Up or down, the BAKFlip MX4 tonneau cover offers full truck bed access thanks to an integrated tailgate seal and long-lasting latch housing components. The truck bed cover has sturdy prop rods on each side, you can even drive at normal highway speeds with the cover fully open. With everything secured by the integrated buckle system, everything will stay in place, and traffic behind you will still have full visibility of your third brake light.

The MX4 sits flush with your bed rails when closed, giving your truck a clean OEM look and feel. Manufactured from heavy-duty aluminum panels – with panel skins 1.5x thicker than the BAKFlip G2 – this tri-fold tonneau cover combines functionality, durability and rugged good looks. And we haven’t even mentioned the dense foam core yet. Well, now we have. Finally, a UV- and scratch-resistant matte black finish and low-profile fit make for a super sharp look from any angle.

But perhaps the most impressive feature of the BAKFlip MX4 folding tonneau cover is the maximum weight rating of 400 lbs! So, you don’t worry about it caving in any time soon. And the manufacturer-backed 5-year warranty will give you peace of mind should any other mishaps happen.

You’ll be happy to know that your new BAK BAKFlip Folding Tonneau Cover doesn’t require any drilling and can be fitted to your truck with a factory-installed look in 30-45 minutes. Plus, you’re still covered by the AutoAnything return/exchange policy and our lowest price guarantee.



Frequently Asked Questions

How secure is the BAKFlip?
Out of sight, out of mind has a significant value in any truck bed cover, but you can lock your cargo secure by simply locking your tailgate. This makes the pull cables which release the cover become inaccessible and turn your truck bed into a lockable storage compartment.

Will BAKFlip damage my cab if its flipped up against the cab?
No. BAK uses D-shaped bumpers to prevent any direct contact between the cab, the back window and your BAKFlip.

Can I drive with the BAKFlip folded open?
Yes, new straps and buckles have become standard on new BAKFlip models. Strapping the cover down flat on the rails behind the cab allows incremental access to the bed and improved rear window visibility. 

How do I lock the BAKFlip if my truck does not have a tailgate lock?
If your truck does not have a locking tailgate, a Pop & Lock or similar lock can be added to your truck to complete the bed security. Sold separately available at AutoAnything.

Is my BAKFlip waterproof?
Ultimately no truck bed cover is totally waterproof. However, if properly installed the BAKFlip in a leader in its class at keeping the bed dry. Although gaps at the tailgate and other areas of the bed can allow minimal water in, there are also special installation techniques to become the most watertight fit possible.



Notes:
Manufacturer Info
Return Information
Detailed Info

Customer Reviews

Average Rating
Appearance
Ease of Installation
Price/Value
Quality
609 Customer Reviews
5 Star
468 (77%)
4 Star
114 (19%)
3 Star
20 (3%)
2 Star
5 (1%)
1 Star
2 (0%)

A little expensive but high quality

This is a great cover. Looks good on my truck and works good. Happy with purchase. Shipping was fast as well.
Posted By Michael F (CABOT, AR) / May 6, 2022
Yes
No

2020 GMC Sierra

Easy install great quality, and fits extremely well.
Posted By Mitch M (The Woodlands, TX) / September 23, 2021
Yes
No

Sharp looking, easy to install

This is the third different type of tonneau I have tried and by far the easiest to install and also my favorite.
Posted By Rob H (Yuma, CO) / January 21, 2021
Yes
No

MX4 for my AT4

This is my second mx4 cover. I had one for my 2018 sierra, now I have one for my 2020 sierra. Bakflip made a few improvements, but there is still a small gap from the top of my tailgate and the cover itself.
Posted By Norman P (Porterville, CA) / December 15, 2020
Yes
No

Very Nice Cover

Easy install, looks great and works great.
Posted By Chad S (Middleburg, PA) / December 15, 2020
Yes
No

Bakflip MX4 Folding Tonneau Cover

I am very satisfied with the look and appearance of this tonneau cover. I had a previous Bakflip which leaked at the corners. We sealed the corners better, but no rain in Arizona. The installation was easy although we some question about positioning the cover and had to re-do it.
Appearance
Ease of Installation
Price/Value
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Posted By Donald W (Chandler, AZ) / June 7, 2020
2020 GMC Sierra
Yes
No

2020 GMC Sierra Denali

Looks like it belongs as part of the original truck equipment. Not 100% waterproof but gives me the security I need for items in the cargo area. Recommend to anyone looking for a tri-fold cover
Appearance
Ease of Installation
Price/Value
Quality
Posted By Lawrence S (MARION, TX) / June 3, 2020
2020 GMC Sierra
Yes
No

Best Bed Cover Out There

After checking out many folding bed covers, I found that the MX4 was the best for me. I waffled a bit on buying it online - questioning whether I could tackle the installation myself, even though I am quite handy. The install went smoothly - much easier than I expected, as I watched a few how-to videos. All told, the installation took an hour. The new updates to the MX4 confirmed that this is a great product: radius corner caps, color-matching rail clamps, etc. I really like this product!
Appearance
Ease of Installation
Price/Value
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Posted By David H (ROSEVILLE, CA) / June 2, 2020
2019 GMC Sierra
Yes
No

Great Tonneau Cover

This is a great looking Tonneau cover. easy to install. Great price.
Appearance
Ease of Installation
Price/Value
Quality
Posted By David S (SIGNAL HILL, CA) / May 15, 2020
2019 Chevy Silverado
Yes
No

2020 sierra

Easy to install. Gives the truck a finished look. I feel it's a little over priced, but works well & overall I'm happy with the purchase.
Appearance
Ease of Installation
Price/Value
Quality
Posted By gary c (strawberry plains, TN) / May 6, 2020
2017 Toyota Avalon
Yes
No

Outstanding Tonneau Cover!

If you've ever owned soft covers you'll really appreciate the security, quality and versatility of the BAKFlip. Since it's so secure you can now store expensive tools, tow straps and hitches in the bed dead space instead of rattling around in the cab. I also like that it's completely silent, doesn't flap around at highway speeds like soft tonneau's. Since it can support 400 lbs snow loads aren't an issue either.
Appearance
Ease of Installation
Price/Value
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Posted By Dan R (Anoka, MN) / April 22, 2020
2019 Chevy Silverado
Yes
No

Tonneau Review

Second one I have had and very nice as usual!
Appearance
Ease of Installation
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Posted By Ryan L (MUSKEGO, WI) / April 4, 2020
2019 Chevy Silverado
Yes
No

Best bed cover ever!!

Light weight but strong ! Insanely easy to install!!
Appearance
Ease of Installation
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Posted By JOHN K (MOUNT JULIET, TN) / April 2, 2020
2020 GMC Sierra
Yes
No

Good choice!

Good quality, good look and easy installing process.
Appearance
Ease of Installation
Price/Value
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Posted By Marius M (HIGHLAND MILLS, NY) / March 13, 2020
2020 GMC Sierra
Yes
No

BAK BAKFlip MX4 Folding Tonneau Cover.

Best cover there is. Easy to install. Looks great. This is my 4th BakFlip.
Appearance
Ease of Installation
Price/Value
Quality
Posted By Lloyd T N (ORANGE, VA) / February 5, 2020
2020 GMC Sierra
Yes
No

After market

I've bought four covers in my life. `This installment is on a brand new truck with three hundred miles. This is the first one that has leaked as much as it's does. This is after applying the cover to the exact process of which it calls for.. because of the natural forward pitch of the vehicle all the water that hits the cover runs down toe the front and there is where it comes in. This style cover I would expect I little water but not the amount I got.
Appearance
Ease of Installation
Price/Value
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Posted By Jeff J (CHESAPEAKE CITY, MD) / January 29, 2020
2020 GMC Sierra
Yes
No

Bak Flip MX4 cover

Very easy to install. Auto Anything customer service amazing. Placed order the old fashioned way, the phone. Sales associate assisted me in selecting the right cover for my needs. Will use Auto Anything for all my future needs.
Appearance
Ease of Installation
Price/Value
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Posted By Mark H (Rancho Santa Margarita, CA) / January 21, 2020
Yes
No

Love it.

I did have to make a slight alteration to one of the hinges because it was sticking out the edge too far and would not fully retract so as to lock the last flap down. It was easy enough to do with the help of a cordless drill. But what's not to love about this cover. Access to the whole bed. Easily installed , could easily removed and carried by one person. Although that's really not necessary given that you have full access to bed when fully opened and protection for the cabs back window
Appearance
Ease of Installation
Price/Value
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Posted By Mike M (Jacksonville, FL) / July 11, 2019
2019 Chevy Silverado
Yes
No

Really great tonneau cover

This is a great looking, functional, and easy to install cover. Really impressed with it and waterproof from the get go. Great job Bak Flip and Auto Everything was great. Thanks!!!
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Ease of Installation
Price/Value
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Posted By Jon W (Apex, NC) / June 27, 2019
2019 GMC Sierra
Yes
No

Perfect !

I initially want a hard cover that would leave my bed rails open for-installation of a sportsbar that I'd order for my new AT4 Sierra. I received my cover promptly. Installation was very easy with videos provided by auto anything.com . The cover is extremely sturdy and looks factory made. It looks so good that I forgo the sports bar that I'd ordered.
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Posted By Quang V (Hibbing, MN) / June 23, 2019
2019 GMC Sierra
Yes
No

Challenging to install straight

This is nice quality and works as advertised. I feel like it is over priced. I was missing a back post for one of the clip screws. The manufacturer sent a new part right away.
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Ease of Installation
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Posted By Kimberly G (SEATTLE, WA) / June 4, 2019
2019 Chevy Silverado
Yes
No
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