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Description

The best-selling truck bed cover in the world just got better.

Introducing the new and improved RealTruck BAKFlip® MX4 (GEN 3)—an evolution of RealTruck's most popular tonneau cover. This next-generation upgrade builds on everything truck owners already love about MX4, now enhanced with improved functionality, greater durability, and elevated security.

The new and improved BAKFlip MX4 is constructed primarily from alloy materials, including heavy-duty aluminum top panels and side rails. Reinforced with high-density polymer cores, each panel delivers a 22 percent increase in overall strength compared to the original model.

Security is also enhanced. In addition to BAK's patented auto-latching system, which automatically secures the cover when closed, the BAKFlip MX4 (GEN 3) features re-engineered lock components for improved resistance to forced entry compared to the GEN 2. No matter the cargo you're transporting, you can rest assured knowing your gear's protected.

When the weather turns, the BAKFlip MX4 (GEN 3) holds strong. Revised EPDM rubber perimeter seals and tight-fit clamps provide our best seal yet, preventing seepage between the bed cover and bed rails. At the rear of the cover, a 13 percent longer dual-action tailgate seal provides weather protection for the tailgate. This innovative design also improves operation, maintaining factory tailgate functionality regardless of the cover's position.

The BAKFlip MX4 isn't only durable, it's also sleek and stylish. Unlike competitors, the BAKFlip MX4 sits flush with your pickup's bed rails, practically disappearing into your truck's profile. And with a sleek, textured matte black finish across all surfaces, the MX4 looks great whether open or closed.

BAKFlip MX4 (GEN 3) Hard Folding Truck Bed Cover - Matte Finish - 2004-2013 Chevy Silverado/GMC Sierra 5' 9" Bed

Specifications

BrandBAK
Part Number448100
ColorBlack
DesignLow Profile
FinishMatte Black
Full Bed AccessYes
Install TimeAbout 1 hour
Low ProfileYes
MaterialALUMINUM
Mounting Hardware IncludedYes
OperationFold-Up
StyleHard Folding Cover
Tool Box CompatibleYes
TypeHard
Universal Or Specific FitSpecific
Weight71 lbs

Vehicle Fitment

Fitment notes: Matte Finish; BAKFlip MX4 (GEN 3)

  • 2004-2013Chevrolet Silverado 1500Trim: BASE · 5'9" Bed bed
  • 2007Chevrolet Silverado 1500 ClassicTrim: BASE · 5'9" Bed bed
  • 2004-2013GMC Sierra 1500Trim: BASE · 5'9" Bed bed
  • 2007GMC Sierra 1500 ClassicTrim: BASE · 5'9" Bed bed

Product reviews

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Reviews from this product line 4.0 (4 reviews)

  1. Returned for a refund due to poor installation

    Linda B.Verified buyer, in store2026 GMC Denali HD

    Reviewed: BAK 448133 – BAKFlip MX4, 6’10” Bed, Black

    The day after the install it rained and the bed of the truck had a lot of water in it. Three days after the install the rubber molding came off and there were pieces of foam inside the bed of the truck. Salesman tried to say he couldn’t refund our money because it had been over a week (it was day 8) even though we called to let him know what happened the day it happened and to say we were going out of town for the weekend so it would be a couple days before we could get it back in. My husband had to direct him to the 100% satisfaction guarrantee on their website before he agreed to remove the cover and give a refund.

  2. Michael B.Verified buyer, in store

    Reviewed: BAK 448130 – BAKFlip MX4, 5’10” Bed, Black

  3. Jeep gladiator and Chevy 2500 bed cover in one day

    Hoyt F.Verified buyer, in store

    Reviewed: BAK 448133 – BAKFlip MX4, 6’10” Bed, Black

    Fit great, looks great

  4. New- too soon

    Phillip F.Verified buyer, in store‘22 GMC Sierra 2500HD AT4

    Reviewed: BAK 448133 – BAKFlip MX4, 6’10” Bed, Black

    Had the cover installed a week ago. Nice folks and looks clean. It has not rained yet so, waterproofing not confirmed. The cover is heavier than I expected.

BAK P/N 448100

BAKFlip MX4, 5'9" Bed, Black

$1,299.99

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On the shelf at 1 H&H store
25 more available to order

Free pickup at an H&H store Free, on the shelf at 1 store
We install it at your local H&H store, about 1 hour of shop time. It shows as its own line in your cart.
Ships Fast
Free store pickupReady at your local H&H
22 storesAcross the Southeast
Family-ownedServing trucks since 1987
Professional installationAdd it to your order for $140.00
Fitment guaranteeIf it doesn't fit, no restocking fee Details
Price matchFound it cheaper? Tell us before you buy Details
Warranty handled hereClaim it at the store, not by mail Details
4.8 out of 5 stars, 5,831 Google store reviews. These rate our stores, not this product. Read the reviews.
4.8
5,831 reviews
Store reviews on Google

Rated 4.8 across 24 stores

Every review below is a verified Google review of an H&H store, written by real customers about the people who sold, fitted and stood behind their gear.

Steve Mills
Madison · 3 hours ago

Great experience and high quality installation!

alan woodward
Lilburn · 3 hours ago

Top of the line company.

Venustiano Perez
Gainesville · 5 hours ago

Justin did a great job for us. Really appreciate the professionalism

Karen Swearingen
Hueytown · 9 hours ago

Check this store out for all of your outdoor and vehicle needs.

JAC
Pensacola · 1 day ago

Great communication and excellent work

Justin Keith
Fultondale · 1 day ago

First time visiting, nice, friendly, & competitively priced

Clarence Wimberly
Conyers · 2 days ago

The customer service was great and helpful the best

Michael Wathen
Pelham · 2 days ago

Very nice people to work with. Very fast service. Did an excellent job. Thanks!

Matt Brayley
Cumming · 2 days ago

The team at Leer Truck Accessory is amazing. I made an appointment to have my Leer top adjusted after enjoying in for two years. They spent a lot of time making sure it was perfect and waterproof - all under warranty. Everyone there is extremely nice and helpful. Great service!

Reviews of H&H Truck & Outdoor stores, sourced from Google. They rate our stores and service, not this individual product.

Popular with the Chevrolet Silverado 1500