









🔒 Elevate your truck game with the MX4—where style meets unstoppable security.
The RealTruck BAKFlip MX4 is a hard folding truck bed tonneau cover designed for 2019-2025 Chevy/GMC Silverado and Sierra models with MultiPro/Flex tailgates. Featuring durable matte-finished aluminum panels, it offers automatic latching security, 100% bed access without blocking the 3rd brake light, and supports up to 400 lbs of evenly distributed weight. Engineered with shock-absorbent bumpers, dual drain tubes, and premium seals, it protects cargo from weather and wear. Proudly made in the USA with global materials, the MX4 comes with a 5-year warranty and a sleek, low-profile design that enhances your truck’s appearance while delivering unmatched functionality.







| ASIN | B07GNLG19C |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #38,145 in Automotive ( See Top 100 in Automotive ) #89 in Truck Tonneau Covers |
| Brand | RealTruck |
| Customer Reviews | 4.4 4.4 out of 5 stars (1,279) |
| Date First Available | August 23, 2018 |
| Exterior Finish | Aluminum |
| Global Trade Identification Number | 00192631020424 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 71 pounds |
| Item model number | 448130 |
| Lock Type | Tailgate |
| Manufacturer | BAK |
| Manufacturer Part Number | 448130 |
| Material | Aluminum |
| Model | 448130 |
| Product Dimensions | 68 x 23 x 8 inches |
| Style | BAKFlip MX4 |
| UPC | 192631020424 |
V**4
Great investment
Love my BAKFLIP! I have a 2021 Chevy Silverado and it fit perfectly. Products came quickly during this holiday season and is easy to install with a You-Tube video. Hardest part is making sure you line it up correctly so it closes and locks properly. Little pricey but it’s worth it.
R**X
Well built, tight fitting and low profile
Impressed with the design on this. Its low profile, fairly easy to install. Make the truck look good. I gave it 4 out of 5 on installation due to i needed another body to help hold a corner down to have it sit right for bolt down. Even that, wasnt difficult at all. RTFM and golden. I tested it thru many a carwash (Crew Carwash) which has high pressure. Hardly any water gets in. Little by the tailgate. We'll see how it holds to sun damage/coloration and the weather. I personally think it will do well! Foldup: This is a must if you use the bed for hauling things. This top folds ups nice and easy. Simple pull down on the cable and flip it over! The mfg states it can hold up some weight. I'm not going to try it unless I have to. I trust what they say. Its a solid top. If you are thinking on this one, dont hesitate!
L**.
Folding bed cover
Was ez to install .. fit .. looks good.. works
B**.
Smooth install and quality product for my 2023 Silverado
First, I spent a fair amount of time doing research for a decent tonneau cover. When I purchased my truck, I knew I needed a tonneau cover. I initially was leaning toward a retractable-style cover for a couple of reasons. One - I wanted something that would make my bed both secure and dry. Two - I wanted something that would be out of the way when I needed the full bed and was electric actuated. Third - I was fairly certain I wanted something constructed of metal rather than plastic or vinyl. There was one issue with electric retractable tops is they are VERY expensive! So, eventually I had arrived at the conclusion I just didn't want to spend the money for a retractable top, but wanted the sturdiness of a metal retractable top. BakFlip hits 2 of my 3 asks for a tonneau cover - AND at a fraction of the cost! So, this is MY comparison contrast between retractable vs folding tonneau covers. Next, when it arrived, it was packed very securely. I was a bit worried after I had ordered because I had read some reviews that indicated their cover was damaged during shipping. The box was large and bulky, but wasn't unmanageable. My 17 year old daughter actually got it into the house just fine on her own. Installation. My advice on installation is to unwrap the cover and brackets and separate the hardware into piles (nuts, washers, lock washers). The other reviews on here are spot-on! If you are like me and you're a garage 'tinkerer' with cars and trucks and know your way around a toolbox, you will have no problem with the install. It took me about an hour. Just be sure, to pay attention to the alignment and insure the brackets are grabbing your bed rails squarely. Definitely worth going back around to give the bolts a final 'snug' when you're done. Performance. I saw mixed reviews on here that were indicative of the cover leaking. The cover (so far) has kept the gear in my bed dry during the handful of rainstorms we've had since the install. As for the dust? Here's the thing. When you put one of these covers on, you are sealing around the top of your bed. The penetrations and voids UNDER that cover will allow dust (and in most cases water). How is it the tonneau cover's fault? Get creative if you want your bed to be air-tight. Overall, I am pleased with this purchase. In the end I am happy that I decided to save about $1600 because, as it turns out, I don't think having a remote and being able to click a button to retract the cover is worth an extra $1600. I hope this review helps if you are on the fence like I was...
J**M
Still one of the best covers IMHO
I have the same cover on a F150 that I've had for a couple of years. This one was easier to install as I have a spray in bed in this truck vs the drop in bed liner. I really like the ease of installation, the ease and versatility of using it and the overall sturdiness. I would have given it 5 stars except that when it's in the full open position, it blocks the bed camera which is disappointing. One other minor thing is that the edges of the aluminum rail at the sides of the panel which meets the tailgate are shiny aluminum vs painted black - a little thing but given the price and the fit and finish of the rest of the unit it was unexpected. Quick fix with a little dab of paint.
A**R
Sometimes you get what you pay for
Arrived in good condition. Definitely don't regret buying this one over one of the no name brands. Mounting was fairly straightforward and the fit looks almost OEM. Time will tell how well it keeps the bed dry, but overall I am satisfied.
D**W
Don't waste your time
Don't waste your time. Installed on a GMC Sierra AT4X. I have installed several covers and usually this is a good brand but this was junk! The rails went on fine and I always expect some adjustment of brackets to get the fit just right but this took me forever to get the driver side to latch properly. I did finally get it to latch but as I was doing a few open and close test I dropped down the last panel and the corner piece of plastic broke off. I am sure they would replace it but why have such a weak point at the corner like that. I am also not a fan of how the back fits over the tail gate, maybe mine specifically just had weirdly bent rubber that would smooth out over time but as it closed the first few times it was far from water tight. I have usually had good luck with Bakflip but for this truck I am looking elsewhere.
G**Y
Fits my 2021 GMC AT4 standard sized bed. No leaks, easy to install.
O**U
Fits perfectly, easy to install, 10 minutes about. High end quality can't beat BAK
C**N
Très satisfait. Exactement comme commander. Le recommende.
F**E
Good service -product came in on time. fit on the truck nicely and was installed with ease. came with all the hardware except was missing 2 fine thread screws for the plastic tiedown holders.
Trustpilot
2 weeks ago
1 day ago