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🚛 Lock it. Weather it. Own the road with BAKFlip MX4.
The BAKFlip MX4 Gen 3 is a premium hard folding truck bed cover designed for 2019-2026 Chevy/GMC Silverado and Sierra 5'10" beds with MultiPro/Flex tailgate. Featuring a patented auto-latch locking system, reinforced aluminum and polymer construction with 22% increased strength, and advanced weatherproof seals, it delivers superior security, durability, and all-weather protection. Tested in extreme climates and backed by a 5-year warranty, it offers full bed access with a sleek, low-profile design and faster installation.







| ASIN | B07GNLG19C |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #16,711 in Automotive ( See Top 100 in Automotive ) #43 in Truck Tonneau Covers |
| Brand | RealTruck |
| Brand Name | RealTruck |
| Customer Reviews | 4.3 out of 5 stars 1,154 Reviews |
| Exterior Finish | Aluminum |
| Global Trade Identification Number | 00192631020424 |
| Included Components | Tonneau cover^rails^hardware^installation guide |
| Item Type Name | BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover | 448130 | fits 2019 GM Silverado, Sierra 5' 8" bed |
| Item Weight | 71 Pounds |
| Lock Type | Tailgate |
| Manufacturer | BAK |
| Manufacturer Part Number | 448130 |
| Manufacturer Warranty Description | Extended 5 Year Warranty |
| Material | Aluminum |
| Material Type | Aluminum |
| Model Number | 448130 |
| OEM Equivalent Part Number | 448130 |
| Style | BAKFlip MX4 |
| Style Name | BAKFlip MX4 |
| UPC | 192631020424 |
| Unit Count | 1.0 Count |
J**L
Factory Fit, Premium Quality, and Exceptionally Well-Packaged
I recently installed a BAKFlip tonneau cover on my new Silverado High Country, and I couldn’t be more impressed. I was also really impressed with how well it was packaged — everything arrived protected, organized, and in perfect condition, which immediately gave me confidence in the product. The build quality is excellent — solid, well-engineered, and it fits the truck perfectly like it came from the factory. Installation was straightforward and took me less than an hour with basic tools. Everything lined up exactly as it should, and the instructions were clear. What I like most is how practical it makes the truck. Coming from an SUV, I was concerned about losing enclosed storage, but this cover completely solves that. It’s secure, keeps everything dry, and still gives me full access to the bed when I need it. It also looks great — low profile and clean, it really complements the High Country trim. Overall, this is one of the best upgrades I’ve made.
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!
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...
R**E
Bakflip mx4 sets the standard
Bakflip sets the standard. Easy to install. Nice unit. I wouldn’t say it creates a water proof space especially with a gmc multipro tailgate. But the bed remains mostly dry. I do think they are overpriced but it is what it is. The first one a got a few years ago was about $850 and I think that’s a fair price. Still it’s a very nice unit and easy to open and store.
C**S
Looks Great On My Truck
Was very excited to get this BAK bed cover. I had it in and out of my cart for several weeks but some of the reviews made me hesitant. Some reviews talked about the box and bed cover being damaged during shipping. I was very pleased when the box arrived and there was no visible damage.... After opening the box. I could see that the left rail for the cover was bent near the tailgate end. The plastic bag it came in wasn't damaged either. All of this makes me believe it was damaged at the factory and still packaged for sale. One of the screws for the plastic clip that holds the cover open had damage to the threads and not usable, Very disappointed! The cover itself was easy to install, but I do have a lot of experience with things like this. The instructions were not that great. They do not give you any idea on acceptable gaps from front to back, you kind of have to figure it out yourself. With the above mentioned damage to the rail, the bed cover is elevated slightly in the corner near the tailgate causing a gap between the truck and bed seal. The cover looks great on the truck, but paying $1,000 and then getting subpar product that is already damaged is beyond disappointing.
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.
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.
S**H
Well worth it
In my case it was delivered 24 hours after I placed the order via standard ground delivery. The cover is not light weight and is well made. The overall fit and finish are excellent. As with most things the installation instructions lack a lot to be desired but, customer support via email was quite good. Now that I've installed one I could do it again on a 2025 Sierra in a couple of hours.
G**Y
Looks great!
Fits my 2021 GMC AT4 standard sized bed. No leaks, easy to install.
F**E
installs easy
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.
C**N
Qualité
Très satisfait. Exactement comme commander. Le recommende.
Trustpilot
1 week ago
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