BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover - Matte Security

In this review of the BAKFlip MX4 tonneau cover the bottom line is simple: this is a premium hard folding cover for owners of 2019-2025 Chevy or GMC Silverado and Sierra trucks with the MultiPro or Flex tailgate who want a clean, secure, no-nonsense solution for bed protection. The MX4's matte-finished aluminum panels and integrated latch system provide the single biggest reason to buy - a near-OEM look with built-in locking when the tailgate is closed, while still allowing full bed access without blocking the 3rd brake light.

Key Features

• Fit: Designed specifically for 5 ft 10 in (69.9 in) beds on 2019-2025 Chevy/GMC Silverado and Sierra with MultiPro or Flex tailgate, ensuring precise alignment and operation.
• Security: Durable aluminum panels automatically latch when partially or fully closed and lock with the tailgate for better theft deterrence.
• Matte finish: Textured matte-finished panels resist UV damage, scratches and visible marks to maintain a factory appearance over time.
• Full bed access: Can be operated closed, folded, or flipped up without covering the 3rd brake light and paired with a dual-action tailgate seal for normal tailgate use.
• U.S. made: Manufactured in the USA with global materials and includes upgraded perimeter seals and hardware for improved durability.

Who It's For

The MX4 is best for pickup owners who prioritize a low-profile, factory-like appearance combined with secure, hard-panel protection for tools, luggage or cargo. It suits drivers who want easy daily operation - folding and flipping the cover is straightforward and retains full bed access.

It is not the right choice for owners of the Carbon Pro bed or trucks with bed lengths other than 5 ft 10 in, and buyers seeking a soft roll-up or retractable style should look elsewhere. Also, those extremely concerned about occasional water intrusion may want to evaluate mounting details before purchase.

Pros & Cons

Pros

• High perceived quality and OEM-like look thanks to the matte-finished aluminum panels.
• Good security with panels that latch automatically and lock with the tailgate closed.
• Full bed access and compatibility with MultiPro/Flex tailgate operation without covering the 3rd brake light.

Cons

• Some users report occasional minor water leakage, so expect to check seals if you carry water-sensitive cargo.
• A few customer reports mention corner piece breakage over time, indicating mixed long-term durability for some installations.

Specifications

Our Verdict

The BAKFlip MX4 is a strong choice for Silverado and Sierra owners who want a secure, low-profile hard folding cover that looks like factory equipment and allows full bed access. It represents solid value for those prioritizing appearance and daily convenience, though buyers should be aware of mixed reports on minor leakage and occasional plastic corner damage.

Frequently Asked Questions

Will this fit a Carbon Pro bed?
No. The MX4 will not fit Carbon Pro beds and is specified for standard beds with MultiPro or Flex tailgates.

Does the cover lock with the tailgate?
Yes. The aluminum panels automatically latch and the cover is fully locked once the tailgate is closed.

Will it block the 3rd brake light?
No. The MX4 is designed to allow full bed access and does not cover the 3rd brake light when flipped or folded.