
Original: $1,149.99
-70%$1,149.99
$345.00The Story
BAKFlip MX4 – Premium Bed Cover for GMC Sierra 1500
Sleek, secure, and durable–what else could you want? The bakflip-MX4 tonneau cover is a top-of-the-line hard-folding cover engineered for maximum aesthetics, weather resistance, and security.
The bakflip-MX4 is constructed entirely from alloy materials, including heavy-duty aluminum top panels and side rails.
Unlike comparable soft-folding tonneau covers, you can't simply slice through the MX4 with a pocket knife.
No matter the cargo in the bed, you can rest assured that your gear's protected by a premium bed cover from BAK industries.
Full Bed Access
When you need to haul large items, just fold the cover toward your cab and secure it in place with the supplied prop rods.
The prop rods rest in an improved rail clip when not in use and upgraded cab bumpers prevent the cover from scuffing your paint.
Upgraded Side Rails
Channeled rails hold the cover in place while shut. These rails feature rubberized endcaps, which prevent any raw aluminum from being exposed.
Universel Tailgate Functionality
Triple fin seals allow the tailgate to operate whether the cover is open or closed. The cover can be closed with the tailgate up too.
Matte Black Finish
The all new matte black finish offers superior scratch resistance and UV protection.
No Drill Clamp
The MX4 can be installed in less than an hour without drilling into the truck bed.
Easy Operation
Each panel automatically latches to the cover's mounting rails as the cover closes. Latches deactivate with a simple pull of the cable.
Key Features
- Heavy-duty aluminum construction
- Sleek matte-black finish
- Extra-strong prop rod clips for a secure hold
- Folds toward the bulkhead for 100-percent bed access
- Premium rubber bumpers protect the cab when folded into the upright position
- Simple no-drill installation
- Weather-resistant EPDM seals and end caps
- 400-lb. Weight capacity
- Includes drain tubes (may require drilling on certain applications)
- 5-year warranty
Vehicle Fitment
Choose from Bed Sizes (5'9", 5' 10", 6' 7" and 8' 2")
- 2019-2024 Sierra/Silverado 1500
Choose from Bed Sizes (6'10" and 8'2")
- 2020-2024 Sierra/Silverado 2500HD/ 3500HD
BakFlip MX4 Sierra: Installation
BakFlip MX4 Sierra Facts:
FAQ:
Will the 2023 GMC 2500 fit the 2024 GMC 2500?
Yes it will
What is recommended to clean and preserve the top?
A mild soap and water mixture works best, avoid anything with wax as it can cause a build-up on the cover
The top is a hard cover not soft
Correct, the MX4 is a hard-top cover.
Can you fold this up 2/3 of the way and still hook up a gooseneck trailer?
On an 8-foot bed yes, anything shorter and it will need to be folded up to the cab.
How does this cover work with carwashes and is t her any noise driving 70 mph down the road ?
Touchless carwashes and/or hand washing are recommended. It can be safely driven at highway speeds with no noticeable noise when properly installed.
How much weight can the cover hold?
Approximately 400 lbs. evenly distributed.
Is hail damage covered by the warranty?
Unfortunately acts of nature are not covered under the standard manufacturer warranty
Can this be opened without lowering the tailgate? For example, sometimes I will go for a swim at the beach and leave my keys in a lockbox in my truck bed so I wouldn’t be able to unlock the tailgate first.
Unfortunately not, the way this cover is designed is to "lock" with the tailgate as there is no external lock on this system.
I recently had one panel on my Bakflip MX4 damaged by a rock. Can I buy a panel replacement without buying the entire kit?
The panels cannot be separated or bought separately, if looking to replace due do damage it would have to be the entire unit.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
BAKFlip MX4 – Premium Bed Cover for GMC Sierra 1500
Sleek, secure, and durable–what else could you want? The bakflip-MX4 tonneau cover is a top-of-the-line hard-folding cover engineered for maximum aesthetics, weather resistance, and security.
The bakflip-MX4 is constructed entirely from alloy materials, including heavy-duty aluminum top panels and side rails.
Unlike comparable soft-folding tonneau covers, you can't simply slice through the MX4 with a pocket knife.
No matter the cargo in the bed, you can rest assured that your gear's protected by a premium bed cover from BAK industries.
Full Bed Access
When you need to haul large items, just fold the cover toward your cab and secure it in place with the supplied prop rods.
The prop rods rest in an improved rail clip when not in use and upgraded cab bumpers prevent the cover from scuffing your paint.
Upgraded Side Rails
Channeled rails hold the cover in place while shut. These rails feature rubberized endcaps, which prevent any raw aluminum from being exposed.
Universel Tailgate Functionality
Triple fin seals allow the tailgate to operate whether the cover is open or closed. The cover can be closed with the tailgate up too.
Matte Black Finish
The all new matte black finish offers superior scratch resistance and UV protection.
No Drill Clamp
The MX4 can be installed in less than an hour without drilling into the truck bed.
Easy Operation
Each panel automatically latches to the cover's mounting rails as the cover closes. Latches deactivate with a simple pull of the cable.
Key Features
- Heavy-duty aluminum construction
- Sleek matte-black finish
- Extra-strong prop rod clips for a secure hold
- Folds toward the bulkhead for 100-percent bed access
- Premium rubber bumpers protect the cab when folded into the upright position
- Simple no-drill installation
- Weather-resistant EPDM seals and end caps
- 400-lb. Weight capacity
- Includes drain tubes (may require drilling on certain applications)
- 5-year warranty
Vehicle Fitment
Choose from Bed Sizes (5'9", 5' 10", 6' 7" and 8' 2")
- 2019-2024 Sierra/Silverado 1500
Choose from Bed Sizes (6'10" and 8'2")
- 2020-2024 Sierra/Silverado 2500HD/ 3500HD
BakFlip MX4 Sierra: Installation
BakFlip MX4 Sierra Facts:
FAQ:
Will the 2023 GMC 2500 fit the 2024 GMC 2500?
Yes it will
What is recommended to clean and preserve the top?
A mild soap and water mixture works best, avoid anything with wax as it can cause a build-up on the cover
The top is a hard cover not soft
Correct, the MX4 is a hard-top cover.
Can you fold this up 2/3 of the way and still hook up a gooseneck trailer?
On an 8-foot bed yes, anything shorter and it will need to be folded up to the cab.
How does this cover work with carwashes and is t her any noise driving 70 mph down the road ?
Touchless carwashes and/or hand washing are recommended. It can be safely driven at highway speeds with no noticeable noise when properly installed.
How much weight can the cover hold?
Approximately 400 lbs. evenly distributed.
Is hail damage covered by the warranty?
Unfortunately acts of nature are not covered under the standard manufacturer warranty
Can this be opened without lowering the tailgate? For example, sometimes I will go for a swim at the beach and leave my keys in a lockbox in my truck bed so I wouldn’t be able to unlock the tailgate first.
Unfortunately not, the way this cover is designed is to "lock" with the tailgate as there is no external lock on this system.
I recently had one panel on my Bakflip MX4 damaged by a rock. Can I buy a panel replacement without buying the entire kit?
The panels cannot be separated or bought separately, if looking to replace due do damage it would have to be the entire unit.
















