• 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 Chevy Silverado & GMC Sierra 5' 9" Bed – Matte Finish

BAK
bak448120
In stock
Exterior Styling
$1,227.99
Enhance your truck’s functionality and security with the BAK BAKFlip MX4 (GEN 3), a top-selling hard...
$1,227.99

BAK BAKFlip MX4 (GEN 3) Hard Folding Truck Bed Cover for Chevy Silverado & GMC Sierra 5' 9" Bed – Matte Finish

Enhance your truck’s functionality and security with the BAK BAKFlip MX4 (GEN 3), a top-selling hard folding tonneau cover designed specifically for 2014-2018 Chevy Silverado and GMC Sierra models with a 5' 9" bed. Crafted primarily from high-strength alloy materials, including heavy-duty aluminum top panels reinforced with high-density polymer cores, this cover offers a 22% increase in overall strength compared to previous models. Its durable construction ensures reliable protection for your cargo against the elements and theft, providing peace of mind during both daily commutes and long hauls.
Security features are upgraded with re-engineered lock components for enhanced resistance to forced entry, complementing BAK's patented auto-latching system that automatically secures the cover when closed. The integrated weather sealing system, including revised EPDM rubber perimeter seals and tight-fit clamps, delivers superior weather protection by preventing water seepage between the cover and bed rails. Additionally, a longer dual-action tailgate seal improves weather resistance at the rear while maintaining full tailgate functionality, allowing seamless access to your truck bed without compromising protection.
The MX4's sleek design sits flush with your truck's bed rails, creating a streamlined profile that virtually disappears into your vehicle’s appearance. Its textured matte black finish enhances durability and aesthetics, whether the cover is open or closed. Installation is simplified with a quick, one-person setup that features a click-in design, reducing installation time by approximately 12%. The cover's innovative prop rod clips are re-engineered for a secure hold, ensuring ease of use and stability during operation. Capable of supporting up to 400 pounds evenly distributed, the MX4 is built for heavy-duty use and long-lasting performance, backed by a 5-year warranty.
Designed for easy access, the cover folds completely against the cab, allowing full bed access when needed. Its integrated water drainage system prevents pooling and water damage, making it highly effective in various weather conditions. Manufactured in Missouri, the BAKFlip MX4 (GEN 3) offers a perfect balance of durability, security, and style, making it an ideal choice for truck owners seeking reliable bed protection with a sleek appearance.

Features:

  • High-density polymer-reinforced aluminum top panels are 22 percent 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 available on most applications
  • 12 percent quicker installation with all-new click-in design
  • Comprehensive 3rd brake light visibility in all positions
  • Sleek textured matte black finish across all components
  • Precision-engineered aluminum side rails and frame
  • Folds against the cab for 100 percent bed access
  • Re-engineered prop rod clips for a secure hold
  • Supports up to 400 pounds evenly distributed
  • Integrated water drainage system for effective moisture management
  • Simple one-person installation process
  • Manufactured in Missouri with a 5-year warranty

Fitment:
2014 Chevrolet Silverado 1500 High Country
2014 Chevrolet Silverado 1500 LT
2014 Chevrolet Silverado 1500 LTZ
2014 Chevrolet Silverado 1500 WT
2014 GMC Sierra 1500 Base
2014 GMC Sierra 1500 Denali
2014 GMC Sierra 1500 SLE
2014 GMC Sierra 1500 SLT
2015 Chevrolet Silverado 1500 High Country
2015 Chevrolet Silverado 1500 LS
2015 Chevrolet Silverado 1500 LT
2015 Chevrolet Silverado 1500 LTZ
2015 Chevrolet Silverado 1500 SSV
2015 Chevrolet Silverado 1500 WT
2015 GMC Sierra 1500 Base
2015 GMC Sierra 1500 Denali
2015 GMC Sierra 1500 SLE
2015 GMC Sierra 1500 SLT
2016 Chevrolet Silverado 1500 Custom
2016 Chevrolet Silverado 1500 High Country
2016 Chevrolet Silverado 1500 LS
2016 Chevrolet Silverado 1500 LT
2016 Chevrolet Silverado 1500 LTZ
2016 Chevrolet Silverado 1500 SSV
2016 Chevrolet Silverado 1500 WT
2016 GMC Sierra 1500 Base
2016 GMC Sierra 1500 Denali
2016 GMC Sierra 1500 SLE
2016 GMC Sierra 1500 SLT
2017 Chevrolet Silverado 1500 High Country
2017 Chevrolet Silverado 1500 LS
2017 Chevrolet Silverado 1500 LT
2017 Chevrolet Silverado 1500 LTZ
2017 Chevrolet Silverado 1500 SSV
2017 Chevrolet Silverado 1500 WT
2017 GMC Sierra 1500 Base
2017 GMC Sierra 1500 Denali
2017 GMC Sierra 1500 SLE
2017 GMC Sierra 1500 SLT
2018 Chevrolet Silverado 1500 Custom
2018 Chevrolet Silverado 1500 High Country
2018 Chevrolet Silverado 1500 LS
2018 Chevrolet Silverado 1500 LT
2018 Chevrolet Silverado 1500 LTZ
2018 Chevrolet Silverado 1500 SSV
2018 Chevrolet Silverado 1500 WT
2018 GMC Sierra 1500 Base
2018 GMC Sierra 1500 Denali
2018 GMC Sierra 1500 SLE
2018 GMC Sierra 1500 SLT
2019 Chevrolet Silverado 1500 Custom
2019 Chevrolet Silverado 1500 High Country
2019 Chevrolet Silverado 1500 LT
2019 Chevrolet Silverado 1500 LTZ
2019 Chevrolet Silverado 1500 SSV
2019 Chevrolet Silverado 1500 WT
2019 GMC Sierra 1500 Base
2019 GMC Sierra 1500 Denali
2019 GMC Sierra 1500 SLE
2019 GMC Sierra 1500 SLT
2020 Chevrolet Silverado 1500 Custom
2020 Chevrolet Silverado 1500 High Country
2020 Chevrolet Silverado 1500 LT
2020 Chevrolet Silverado 1500 LTZ
2020 Chevrolet Silverado 1500 SSV
2020 Chevrolet Silverado 1500 WT
2020 GMC Sierra 1500 Base
2020 GMC Sierra 1500 Denali
2020 GMC Sierra 1500 SLE
2020 GMC Sierra 1500 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

×