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BakFlip MX4 Tonneau Cover 448120

BakFlip MX4 Tonneau Cover
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Customer Images

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  • Our Price: $1,199.99
  • Shipping:FREE SHIPPING
  • Part Number: 448120
  • UPC: 819275042000
  • Rating: (727)

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BakFlip MX4 Tonneau Cover

  • Part #: 448120
  • without Utility Storage Box

$1,199.99

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Ships between 04/23/24 - 04/24/24
  • We will NOT be undersold on BakFlip Tonneau Covers! Seen a better price? Call us at 800-663-1570 and we'll beat it!
  • Bring both style and function to your truck with the durable and lightweight BakFlip MX4 Aluminum Tonneau Cover
  • New and improved universal rear seal – closes with tailgate in the open or closed position
  • Fully opens for complete, 100% bed access
  • Standard model available, or choose to add the BakBox utility storage box (not available for all vehicles)
  • Enhanced heavy-duty Aluminum construction – resistant to scratching and UV radiation
  • Injection molded latch housing for superior durability
  • Attractive Black flat matte finish
  • BakFlip Comparison Chart
  • Made in the USA
  • Backed by a 5-Year Warranty

Whether you’re loading your truck up with sand, cement, or concrete, or packing up for a weekend camping trip, your cargo needs to be protected, and your truck deserves to look good. If you want to add all the convenience of a locking trunk to the style and function of your pickup, equip your rig with the BakFlip MX4 Aluminum Tonneau Cover.

Not only do the enhanced heavy-duty aluminum panels look great in their flat matte finish – they also provide incredible resistance to scratches and UV rays. In addition, the premium density foam core stands up strong to heavy use and abuse. The newly upgraded rear seal is universal, and allows you to close your cover while the tailgate is in the open or closed position - no need to worry about damaging your cover when you close the cover in a hurry. Now, new and updated features include include Matte elevator bolts, prop rod clips, rail end caps, and finished cab corner caps.

Your BakFlip MX4 Aluminum Tonneau Cover is rated to hold up to 400 lbs of evenly distributed weight right on top. The latch housing is injection molded, for supreme durability that will last for the long haul. This cover is made in the USA and backed by a 5-Year Warranty.

Optional Upgrade: Choose the Standard BakFlip MX4 model, or maximize your truck bed's functionality by adding the optional BakBox Folding Toolbox. This truck toolbox is strong, lightweight, easy to handle, and works seamlessly with the BakFlip MX4. (BakBox not available for all vehicles.)

BAK 448120 fits:

  • 2014-2024 Chevrolet Silverado Pickup
  • 2014-2024 GMC Sierra Pickup

BakFlip MX4 Tonneau Cover Customer Reviews

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Overall Rating:

4.7 of 5

Average Install Time: 30-60 minutes

Showing 42 of 727 reviews. See All Reviews.

who drives a Chevy Silverado
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Cover was damaged when I received it. They sent me a new cover, the new one was good. After installing it, I am happy with the product.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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I love my bed cover and the BakFlip is really easy to install and use. I did also get the Bakbox which is hard to access unless you open up the entire cover. I also, don't like that the cover covers the back window when fully pulled back. Regardless, it is a great cover and I'm really happy with it.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Thanks for the military discount. Packaging looked great but did have 1 small plastic clip for prop up rod broken when opened up and inspected. Called 1 800 number enclosed and received new clip and an extra within 2 days. Cover looks great and am well satisfied.

Install Time: Under 30 minutes

who drives a Chevy Silverado
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My Silverado look great, easy to install, took me less that an hour.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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The installation instructions are a little weak but nothing you cant figure out. Other than that... look, quality, and everything else is better than expected.

Install Time: 1-2 hours

who drives a GMC Sierra
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Pretty simple and straight forward install, instructions were clear as day and very well said. So far I am very pleased with the install and overall quality of the cover and I do not expect that to change.

Install Time: Under 30 minutes

who drives a Chevy Silverado
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I had found a bakflip mx4 locally and decided its what I wanted. I found a very competitive online price and auto accessories beat it by $10. They also shipped the product out right away and I had it in a couple days. The cover was easy to install, I went online and watched the installation video which was easier for me to follow. So far I have been very happy, the appearance is great. I have not had it in the rain yet, so I'm not sure if it will be completely waterproof, but everything else is great

Install Time: 1-2 hours

who drives a GMC Sierra
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The directions were easy to follow. The components were high quality and fit my truck very well. I would recommend to anyone looking for a Tonneau-Cover.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Nice product. Ordering was easy and product was delivered when stated. Only issue was with a loose bracket that holds the support rods, but dealing directly with the manufacturer was easy and replacement parts are on there way.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Well made product, relatively easy to install. Directions straight forward, plus fast shipping. Good Job!

Install Time: 1-2 hours

who drives a GMC Sierra
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Just put it on yesterday, it looks great and as long as it doesn't leak its perfect.

Install Time: Under 30 minutes

who drives a GMC Sierra
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The transaction for this purchase was simply AAA+. The product was exceptional and very easy to install with instructions that were very easy read and interpret. Will definitely purchase again from Auto Accessories Garage.

Install Time: 1-2 hours

who drives a GMC Sierra
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Excellent product, have used it now for about 5 months. Installs super easy and fits very flush. I have been treating it with Aerospace 303 protectant as recommended and works great too. Bed stays mostly dry, not waterproof, but only a very little water entry and only near the tailgate, less than I expected. I like that I can fold it completely out of the way so I can walk around the bed and move stuff around, then close it up tight. Seems very secure.

Install Time: Under 30 minutes

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This is my third bak flip cover and I like it better than the other two because it does not have to be open to use the tailgate.

Install Time: 2+ Hours

who drives a GMC Sierra
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Installed in a breeze! Feels heavy duty and solid construction. Looks sharp! (2015 Sierra Denali)

Install Time: 30-60 minutes

who drives a Chevy Silverado
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I really like the quality of it. I've had several comments on how nice it looks and fits. We get pretty rough winters so we'll see how it holds up over the winter. I haven't had the new truck out in the rain yet so I can't tell you how good or bad it'll leak yet, if at all. Based on the reviews I'm hoping it doesn't. Thank you for a fair price on a well made product.

Install Time: 1-2 hours

who drives a Chevy Silverado
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Arrived quickly and the packaging was in good shape. Components well packaged in the box. Used YouTube video to install. Installation was easy. Was missing one of the screws that hold one of the front latches to the cover, but found one in my stash. Everything lined up and with the help of the wife installation was a breeze. Looks great. I like the way it sits down flush with the rail caps. I'd buy another.

Install Time: 1-2 hours

who drives a GMC Sierra
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Very satisfied with this cover. Does everything they said it would and was easy to install. Love it.

Install Time: 1-2 hours

who drives a GMC Sierra
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Brother and I installed under two hours. Have ran it through the car wash twice and all four corners leak a little, not enough to soak your gear though. Overall I am satisfied. Will fully know after hunting season how it is.

Install Time: 1-2 hours

who drives a Chevy Silverado
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First time installing a bedcover ever and it was quick and easy to do since I didn’t have any help. I was worried with the weather stripping laying flat but within 2 days it laid out perfectly. The cover looks great on my 2018 Silverado.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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My overall rating would have been 5 stars, but it is packed poorly and damage was caused during shipping. The one rail was dented pretty good. It took a while to get it back in shape. For suck a high priced item I would think that the packaging for shipping would be better. Under performance rating I had to do 4 stars instead of 5 because the one clip kept sticking and would not latch when you closed the last panel on the the drivers side. After about 10 minutes of adjusting it it latches... once again for such a high priced item I would have hoped for a bit better quality in the clips. I will say this is my second bakflip and I do love them (when the clops work and the rail is not dented). I would recommend the product to anyone and I hope that from my review that things change with the shipping and the quality control improves.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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Would never buy from BAK Industries again. I purchased a BAKFLIP MX4 for my 2018 silverado, BAK tells you their covers are not 100% water tight after you purchased one and are having leaking problems. You would think BAK could make a truck cover that does not leak, others do.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Easy instructions to follow. All parts in package. No drilling. Quite while driving no flapping. Well built. Not heavy to take off. Good customer service at AutoAccessoriesGarage.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Not impressed with the fit the lid won't lock when I close it on the last fold and when I adjust it so that it will I can pull it open with out releasing the latch wish I never paid the money for the product.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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Pretty easy to install. Easier with two people but could be done alone. Getting the alignment right was the hardest part. Making sure the front and rear seal properly against the front bulkhead and tailgate. Looks great and functions well!

Install Time: 1-2 hours

who drives a Chevy Silverado
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The cover is nice. The latching doesn’t work quite right and I am going to have to do some shimming.

Install Time: 1-2 hours

who drives a GMC Sierra
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Very fast delivery. Came well packaged (box had some damage but no damage to the parts). Very easy installation with a perfect fit on my GMC,

Install Time: 30-60 minutes

who drives a Chevy Silverado
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MX4 looks great on my 2017 Silverado. Instructions made installation easy.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Easy install. Looks good. Not sure on performance yet, time will tell. One quality control issue that BAK is sending out a repair kit to remedy: the weather stripping on the cover where it meets bulkhead strip did not adhere due to shavings in the adhesive. Overall seems to be very nice cover.

Install Time: 1-2 hours

who drives a Chevy Silverado
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On a 2014 Silverado, product is great works as described, easy to install, I did it myself. Makes truck bed feel safer and nicer, with a sleek look. I would recommend to any truck owner. I bought a vinyl cover before lasted about 1 1/2-2 years stitching came apart, I should have bought this 1 first but I went with the cheaper way. Lesson learned!!

Install Time: 30-60 minutes

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So far,so good. Looks great.

Install Time: 30-60 minutes

who drives a GMC Sierra
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The video helped on the install but the quality was not good. The mounting holes were not lined up and the extra support brackets were poorly glued in place and crooked. This caused me to redrill and was necessary to install front brackets. The directions for rubber gasket at bulkhead was poor and could not be installed without causing the cover to not fit flush. The rubber seals on front top will need superglue to stay in place and I am afraid to run through a car wash for fear of pealing entire seal off- which is factory installed to cover. Just poor quality all the way around- shameful! In closing, for 900.00 the top should be much better quality control and made better. I am highly disappointed but will keep it.

Install Time: 2+ Hours

who drives a Chevy Silverado
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This is my first experience with a bed cover and I will say I just installed it yesterday so I don't have a long term review. Installation was easy and did it myself using vice-grips like the install video explained. I did not use the written instructions, just used the 7min YouTube video from BAK and it was easy. I can see where the install could take 20-30min but I took my time and did it in 40min. I did a lot of research before buying. My main concerns were rattling, flush-fitting and ability to drive with it partially open. his cover is the best, hands-down... not cheap but it screams quality. No rattling at all and about as flush as half the thickness of my finger (see pic). One nit pick would be the holders for the prop-up rods, they seem flimsy but I'm not concerned. We use my truck like an SUV since we have kids, I coach baseball and have gear that I'm tired of taking out of the bed and putting in the truck when we stop to eat. Also, we put the bikes in the back today with it partially clipped-open and it's perfect. For the newer chevy trucks with the OEM spray in liner the plugs are plastic ovals on the side of the bed and you can take them out or drill a 7/8" hole in the middle for the drain hose - The nice thing is the holes are up high and the drain hose is totally out of the way (see pic). Get one, you will not regret it.

Install Time: 30-60 minutes

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This is the second BAK tonneau cover I have purchased. Durability, performance, ease of use, looks, everything.I give it an A+. Installed by myself in about 30 min. Highly recommend BAK flip.

Install Time: Under 30 minutes

who drives a Chevy Silverado
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Great product. Thanks for your help.

Install Time: 30-60 minutes

who drives a GMC Sierra
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Received the cover and no hardware. Had to wait days to receive hardware and instructions. Poor quality control on the part of BakFlip but AAG was great to work with in getting things settled.

Install Time: 30-60 minutes

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I didn't know what to expect when I purchased this cover. I am totally satisfied with this cover. It was very easy to install, fits perfect and is very high quality and I like its features.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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The BakFlip mx4 tonneau cover might seem expensive, but the quality and the looks of the cover made me realize I made the right decision. Precision cut to fit perfectly in my Silverado. I love it. Shipped in a well protected box and not a scratch on it when I received it. This is a cover that comes with a 3 year warranty and not like most other covers that only come with a one year. You won't regret buying this tonneau cover. Be prepared to have a 7/8 drill bit for the trucks 2 plastic bed seal covers on the inside bed. This allows water drain out and not get inside the bed.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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Really like the look and function. It hasn't gone through a good dousing yet, so I can't speak to the water resistance, though my skeptical side is leaning towards having some leaks based on my close observance of the fit (I can see light at the corners... yes, I crawled into the bed and shut it ;-). Now, first box contained a rail that was obviously damaged despite a "QA" packing stamp on the box. Gotta step that game up, Bak. Contacted AutoAccessoriesGarage and received replacement from Bak within the week. Very good! So, rails went on as easy as a greased hog, set the cover on them, and... cover holes didn't line up with the brackets. WTH? DEFINITELY not like the video shows it. Well, make it fit or put this off again? Good ole American know how... brute force made it fit and a little more brute force got the knobs on the threads. Once tightened up things seemed to meld themselves into alignment, though I won't be taking the cover off unless it's to replace it. The instructions (written and video) are kinda vague on the front-to-back alignment, but it seems I've got it as close to fitting on each end as is possible.. and then back to my "we'll see when I have a chance to soak it". Love the look! Could have been a little lighter on the wallet.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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Very easy to install with very minor tools by myself. Borrowed a pair of hands for about 5 minutes to push down the rails while I tightened the bolts up but I could have done it without it. Make sure to test that everything is water tight by spraying it down with a hose to check for any leaks. Its only been on the truck for about a week but so far so good. I have a drop in liner so I installed the drain plugs out the front of the bed. Be careful not to scratch the paint when you are removing the pop in covers. On the Silverado the rear clamps cant go 6-9 inches from the rear because it would smack the metal framing so mine sit about a foot back.

Install Time: 30-60 minutes

who drives a Chevy Silverado
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This is what I was looking for. It fits perfect and looks awesome!

Install Time: 30-60 minutes

who drives a GMC Sierra
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We love our cover for our truck. It looks really good.

Install Time: 30-60 minutes

Showing 42 of 727 reviews. See All Reviews.