• Trusted by Racers

    Professional-grade parts used trackside.

  • Real Support, Real People

    Expert help during business hours.

  • Secure Shopping

    Encrypted checkout & trusted payments.

  • Fast U.S. Shipping

    Orders ship quickly from regional warehouses.

BAK BAKFlip MX4 (GEN 3) Hard Folding Truck Bed Cover for Chevrolet Silverado & GMC Sierra 1500/2500/3500 with 8 ft Bed – Matte Finish

BAK
bak448122
In stock
Exterior Styling
$1,430.99
Upgrade your truck bed with the BAK BAKFlip MX4 (GEN 3), a top-selling tonneau cover designed...
$1,430.99

BAK BAKFlip MX4 (GEN 3) Hard Folding Truck Bed Cover for Chevrolet Silverado & GMC Sierra 1500/2500/3500 with 8 ft Bed – Matte Finish

Upgrade your truck bed with the BAK BAKFlip MX4 (GEN 3), a top-selling tonneau cover designed for versatile durability and security. Crafted primarily from high-density polymer-reinforced aluminum, this cover features top panels and side rails that are 22% stronger than previous models, ensuring long-lasting performance. Its sleek, textured matte black finish complements your truck's profile while providing a professional appearance whether the cover is open or closed. The MX4's design allows it to sit flush with your truck’s bed rails, maintaining a streamlined look and minimal profile that enhances your vehicle's aesthetics.
The MX4 (GEN 3) offers advanced security with re-engineered lock components, in addition to BAK's patented auto-latching system that automatically secures the cover when closed. Reinforced perimeter seals and tight-fit clamps deliver superior weather resistance, preventing water seepage and protecting your cargo from the elements. An extra-long dual-action tailgate seal further enhances weatherproofing, providing comprehensive coverage without compromising factory tailgate functionality. The innovative design maintains full bed access by folding completely against the cab, making loading and unloading quick and effortless.
Installation is simplified with a new click-in system, reducing setup time by approximately 12%, and the re-engineered prop rod clips ensure a secure hold during use. The cover supports up to 400 pounds of weight evenly distributed, making it suitable for a variety of cargo. Additional features include integrated water drainage systems for added protection and a striking textured black finish that looks great in any environment. Assembled in Missouri with a five-year warranty, the BAKFlip MX4 (GEN 3) combines durability, style, and ease of use to meet the needs of truck owners seeking reliable bed protection and enhanced security.

Features:

  • High-density polymer-reinforced aluminum top panels are 22% stronger than the original MX4
  • Re-engineered automatic latching panels offer improved security over the GEN 2 design
  • Re-engineered perimeter seals and tight-fit clamps for superior weather protection
  • Premium rubber bumpers protect the cab when folded into the upright position
  • Extra-long, dual-action tailgate seal provides enhanced weatherproofing
  • 12% quicker installation with all-new click-in design
  • Comprehensive 3rd brake light visibility in all positions
  • Sleek textured black matte finish across all surfaces
  • Precision-engineered aluminum side rails and frame for durability
  • Folds against the cab for full bed access
  • Re-engineered prop rod clips for secure hold
  • Supports up to 400 lbs. of evenly distributed weight
  • Integrated water drainage system for added protection
  • Simple, one-person installation process
  • Assembled in Missouri with a 5-year warranty

Fitment:
2014 Chevrolet Silverado 1500 LT
2014 Chevrolet Silverado 1500 WT
2014 GMC Sierra 1500 Base
2014 GMC Sierra 1500 SLE
2015 Chevrolet Silverado 1500 LS
2015 Chevrolet Silverado 1500 LT
2015 Chevrolet Silverado 1500 WT
2015 Chevrolet Silverado 2500 HD High Country
2015 Chevrolet Silverado 2500 HD LT
2015 Chevrolet Silverado 2500 HD LTZ
2015 Chevrolet Silverado 2500 HD WT
2015 Chevrolet Silverado 3500 HD High Country
2015 Chevrolet Silverado 3500 HD LT
2015 Chevrolet Silverado 3500 HD LTZ
2015 Chevrolet Silverado 3500 HD WT
2015 GMC Sierra 1500 Base
2015 GMC Sierra 1500 SLE
2015 GMC Sierra 2500 HD Base
2015 GMC Sierra 2500 HD SLE
2015 GMC Sierra 2500 HD SLT
2015 GMC Sierra 3500 HD Base
2015 GMC Sierra 3500 HD Denali
2015 GMC Sierra 3500 HD SLE
2015 GMC Sierra 3500 HD SLT
2016 Chevrolet Silverado 1500 LS
2016 Chevrolet Silverado 1500 LT
2016 Chevrolet Silverado 1500 WT
2016 Chevrolet Silverado 2500 HD High Country
2016 Chevrolet Silverado 2500 HD LT
2016 Chevrolet Silverado 2500 HD LTZ
2016 Chevrolet Silverado 2500 HD WT
2016 Chevrolet Silverado 3500 HD High Country
2016 Chevrolet Silverado 3500 HD LT
2016 Chevrolet Silverado 3500 HD LTZ
2016 Chevrolet Silverado 3500 HD WT
2016 GMC Sierra 1500 Base
2016 GMC Sierra 1500 SLE
2016 GMC Sierra 2500 HD Base
2016 GMC Sierra 2500 HD SLE
2016 GMC Sierra 2500 HD SLT
2016 GMC Sierra 3500 HD Base
2016 GMC Sierra 3500 HD Denali
2016 GMC Sierra 3500 HD SLE
2016 GMC Sierra 3500 HD SLT
2017 Chevrolet Silverado 1500 LS
2017 Chevrolet Silverado 1500 LT
2017 Chevrolet Silverado 1500 WT
2017 Chevrolet Silverado 2500 HD High Country
2017 Chevrolet Silverado 2500 HD LT
2017 Chevrolet Silverado 2500 HD LTZ
2017 Chevrolet Silverado 2500 HD WT
2017 Chevrolet Silverado 3500 HD High Country
2017 Chevrolet Silverado 3500 HD LT
2017 Chevrolet Silverado 3500 HD LTZ
2017 Chevrolet Silverado 3500 HD WT
2017 GMC Sierra 1500 Base
2017 GMC Sierra 1500 SLE
2017 GMC Sierra 2500 HD Base
2017 GMC Sierra 2500 HD SLE
2017 GMC Sierra 2500 HD SLT
2017 GMC Sierra 3500 HD Base
2017 GMC Sierra 3500 HD Denali
2017 GMC Sierra 3500 HD SLE
2017 GMC Sierra 3500 HD SLT
2018 Chevrolet Silverado 1500 LS
2018 Chevrolet Silverado 1500 LT
2018 Chevrolet Silverado 1500 WT
2018 Chevrolet Silverado 2500 HD High Country
2018 Chevrolet Silverado 2500 HD LT
2018 Chevrolet Silverado 2500 HD LTZ
2018 Chevrolet Silverado 2500 HD WT
2018 Chevrolet Silverado 3500 HD High Country
2018 Chevrolet Silverado 3500 HD LT
2018 Chevrolet Silverado 3500 HD LTZ
2018 Chevrolet Silverado 3500 HD WT
2018 GMC Sierra 1500 Base
2018 GMC Sierra 1500 SLE
2018 GMC Sierra 2500 HD Base
2018 GMC Sierra 2500 HD SLE
2018 GMC Sierra 2500 HD SLT
2018 GMC Sierra 3500 HD Base
2018 GMC Sierra 3500 HD Denali
2018 GMC Sierra 3500 HD SLE
2018 GMC Sierra 3500 HD SLT
2019 Chevrolet Silverado 2500 HD High Country
2019 Chevrolet Silverado 2500 HD LT
2019 Chevrolet Silverado 2500 HD LTZ
2019 Chevrolet Silverado 2500 HD WT
2019 Chevrolet Silverado 3500 HD High Country
2019 Chevrolet Silverado 3500 HD LT
2019 Chevrolet Silverado 3500 HD LTZ
2019 Chevrolet Silverado 3500 HD WT
2019 GMC Sierra 1500 Base
2019 GMC Sierra 2500 HD Base
2019 GMC Sierra 2500 HD SLE
2019 GMC Sierra 2500 HD SLT
2019 GMC Sierra 3500 HD Base
2019 GMC Sierra 3500 HD Denali
2019 GMC Sierra 3500 HD SLE
2019 GMC Sierra 3500 HD SLT
2020 GMC Sierra 1500 Base
2020 GMC Sierra 2500 HD Base
2020 GMC Sierra 2500 HD Denali
2020 GMC Sierra 2500 HD SLE
2020 GMC Sierra 2500 HD SLT
2020 GMC Sierra 3500 HD Base
2020 GMC Sierra 3500 HD Denali
2020 GMC Sierra 3500 HD SLE
2020 GMC Sierra 3500 HD SLT
Read More
Read Less

Shipping

Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.

Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.

Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.

Returns

Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.

Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.

Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.

Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).

Your cart

×