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Upgrade your truck with the BAK BAKFlip MX4 (GEN 3), a top-rated hard folding tonneau cover designed for 2014-2018 Chevy Silverado and 2015-2020 GMC Sierra models with a 6' 6" bed. This innovative cover features high-density polymer-reinforced aluminum panels that are 22% stronger than the original MX4, providing enhanced durability and long-lasting protection for your cargo. Its sleek matte black finish offers a modern look that seamlessly integrates with your truck's profile, whether the cover is open or closed.
The MX4's design allows for full bed access by folding the panels against the cab, making loading and unloading quick and convenient. It sits flush with the truck bed rails, creating a low-profile appearance that minimizes wind resistance and enhances aerodynamics. The cover is engineered with precision aluminum side rails and frame, ensuring a secure fit and structural integrity.
Security is a priority with re-engineered auto-latching panels that automatically lock when closed, along with upgraded lock components for increased resistance to forced entry. Weather protection is improved through re-engineered perimeter seals, tight-fit clamps, and an extra-long dual-action tailgate seal, which collectively prevent water seepage and keep your cargo dry in harsh weather conditions. A reinforced rubber bumper protects your cab when the cover is folded upright, maintaining vehicle aesthetics and functionality.
Installation is simplified with a 12% quicker, click-in setup suitable for one person, thanks to re-engineered prop rod clips that hold the cover securely in place. The integrated water drainage system prevents water accumulation, and the cover supports a weight capacity of up to 400 pounds when evenly distributed. The MX4 is assembled in Missouri and comes with a 5-year warranty, ensuring peace of mind and dependable performance.
Whether you're transporting tools, gear, or recreational equipment, the BAKFlip MX4 offers a combination of strength, security, weather resistance, and style, making it an ideal addition for serious truck owners seeking reliable bed protection and full access.
Features:
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.
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).
