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When you need your entire bed for hauling gear or larger loads, the BAKFlip MX4 makes it easy. The tri-fold aluminum panels flip up in sections, letting you open part of the bed or all of it in seconds. Prop rods keep the cover locked upright so you can drive with the bed fully open. The integrated buckle system secures it whether folded, flipped up, or closed, so it stays put no matter how you’re using it.
Keeping your cargo dry matters when you’re driving through rain, snow, or slush. The MX4 uses matte black rubber seals and a built-in drainage system along the rails to help channel water out of the bed. The rear seal allows you to open or close the tailgate with the cover up or down, keeping a tight fit that helps block dust and moisture from getting in.
This cover isn’t just for looks—it’s built tough. Each panel is 1/2" thick, made from rustproof aluminum with a premium density foam core for strength. It’s rated to hold up to 400 lbs of evenly distributed weight, so you can set gear or tools on top without worrying about flexing or sagging. The panels automatically latch when closed, locking securely when your tailgate is locked, giving you solid protection without adding bulky hardware.
The MX4’s matte black finish looks sharp and stays that way. It’s resistant to scratches, scuffs, and UV rays, so it won’t fade or chalk over time. The low-profile fit sits flush inside the bed rails, keeping your truck’s clean lines intact while cutting down on wind drag for a more aerodynamic look.
Because the MX4 mounts inside the bed rails, you can still use stake-pocket or raised-side-rail accessories like ladder or kayak racks. That means you can haul extra gear up top while keeping the bed protected underneath. The aircraft-grade aluminum rails clamp on with no drilling required, so installation is quick and solid without any permanent changes.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Katie Osborne: Katie Osborne with trucks hero here to tell you what makes this Backflip MX for the number one selling hard truck bed cover on the market. The aluminum encased panels provide security and weather protection when closed. And when folded open, it provides full bed access, plus you can then drive it around town by securing it with a prop rod. And of course, this low profile matte black finish looks great on any truck.
Ratings & Reviews
Good quality product in 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.
Love the MX4 ...Took a little longer to install but looks great...
Solid performance. Only issue is with the glue holding the pads is failing
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 own three of these on three different trucks. The two I purchased this year and last year are not as good quality as the one I purchased in 2023.For the price they are feeling pretty cheap now and parts are falling off. Latch covers and rubber par to rest the top on when folded up have fallen off on both of the covers. I will not be buying these brand covers again.
the bedcover finally came in.
Few pictures of it installed.
I replace a camper shell with the tonneau cover because it is easier to remove when I want to put my pickup camper on the pickup. I am very happy with the cover and am glad I made the switch.
Excellent product! Wait time was crazy but manufacturer is to blame on that one!
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 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.
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
Great fit on a Ram 2500 long bed. Everything stays dry on the inside.
Great tonneau cover. Fits as it should.
I have been using this cover for almost a year now, and am very pleased with it. It looks and fits great, and it is secure and keeps most of the bed dry in the rain. A couple of rubber trip bits have needed some improved securing, and I used a little RTV so it was easy. I drove it across the country round trip last summer and it was perfect. I would recommend this cover for a great-looking and pretty secure cover. Finally, it is easy to fold forward when it is time to haul loads taller than the bed rails.
Purchased this BAKFlip for my new 22 RAM Classic 1500. Installation went well, instructions were good to follow, and it fit perfectly. One of the plastic hold down clips had a manufacturer defect with excess plastic mold residue inside the clip that prevented it from properly working. I sent an online warranty claim explaining the problem, and a new clip was sent to me in a reasonable amount of time, and it worked fine. After one year of using the cover, I am very happy with it. Everything functions as it should, and it is very versatile. While it is not 100% watertight, I mostly notice a small amount of leakage around the tailgate seal after washing the truck. Under normal rainy weather, there is no leakage, and we get plenty of rain in the PNW. My four-star rating rather than a 5 star is only because of the manufacturer defect and the curling of one of the rubber cushions on the underside of one of the panels where the adhesive holding it on the edges has not held up under the hot weather (with the black color, when the sun beats down on the cover it gets pretty toasty inside the truck bed with the cover closed). I am thinking that should be an easy fix by applying some good adhesive and taping in place until the adhesive cures. Just haven't gotten around to doing it. Again, really like this cover. Would recommend it to others, and if I ever have a need for one in the future, would definitely not hesitate getting another BAKflip.
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!
BAKFlip MX4 is a great addition to any pickup. It allows for secure transport of material, keeping it dry in bad weather and yet readily accessible with the flip of a panel. It also keeps the weather away from your 5th wheel hitch. Can be left on when towing.
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.
The bed cover has been great so far. Followed the instructions and took my time adjusting it and it has been working well. Keeps the bed dry and looks good. I did have to order an extra kit to get enough rail clamps. Once I put the extra clamps on it feels much more secure. For 8ft beds they need atleast 8 to 10 clamps, not 6. The cover has been working in that I don’t have to uncover the whole bed to use it. I just need to open up as much as I need at the time.
Ordered the BAKFlip MX4 for my son on 12/15 after calling to verify the tonneau would arrive by Christmas. Then received an email that said "Your order has been forwarded to one of our partners for direct shipment to you" and never received another shipping update or any tracking info. Finally on 12/22 I emailed Etrailer.com who told me they didn't know when I would get it. The Tonneau finally arrived on 12/29, 3 days after my son returned to California (he drove his truck, 2100 miles). He won't be back till next Christmas so I have to figure out how to return this product. I had several other buying options to get this here by Christmas, but went with Etrailer because of their reputation. This will be my last purchase from Etrailer.com.
Bought it used.. I asked if it was complete undamaged.. It arrived complete including a scratch on the inside cover.. I'm glad it wasn't on the outside cover. Shipping was quick. Installation was fairly straight forward
I love how this tonneau cover works. because it allows use of almost the entire bed of the truck when it's fully open. I was a little disappointed with the clamps for installing the side rails, as they didn't seem as robust as the clamps in the cover I bought for my last truck. However, I am happy with its operation, and the fact that the truck bed is a locked compartment when I lock the tailgate.
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