Product Overview
The BAKFlip MX4 is a matte-finished, hard folding truck bed tonneau cover designed for secure cargo stowage and full bed access. It features durable aluminum panels with a textured matte-finish for UV protection and scratch resistance. The cover includes an integrated buckle system and automatic latching mechanism for versatile operation.

Image: The BAKFlip MX4 tonneau cover installed on a truck, showcasing its sleek, low-profile design.
What's in the Box
- Tonneau Cover
- Rails
- Hardware
- Installation Guide
Setup & Installation
This section provides general guidance for installing your BAKFlip MX4 tonneau cover. For detailed, model-specific instructions, please refer to the included Installation Guide and official installation videos.
Measuring Your Truck Bed
Accurate measurement of your truck bed is crucial for ensuring compatibility and proper fitment of your tonneau cover. Refer to the image and video below for guidance.

Image: Diagram illustrating how to measure your truck bed length for proper tonneau cover fitment, showing different bed sizes for Silverado/Sierra models.
Video: Official RealTruck guide on how to accurately measure your truck bed to ensure correct tonneau cover selection.
Installation Process
The installation typically involves preparing the truck bed, attaching the rails, and then positioning the tonneau cover. Ensure all surfaces are clean and dry before applying seals or mounting components.
Video: Detailed installation guide for the RealTruck BAKFlip MX4 (Gen 3) on a 2024 Ford F-150, provided by Laurmark Enterprises (dba, BAK Industries).
Video: Installation instructions for the BAKFlip MX4 on a 2025 GMC Sierra 1500, presented by Laurmark Enterprises (dba, BAK Industries).
Video: Comprehensive installation guide for the BAKFlip MX4 on a 2024 Ford Ranger, provided by Laurmark Enterprises (dba, BAK Industries).
Video: Installation instructions for the BAKFlip MX4 on a 2022 Toyota Tundra, presented by Laurmark Enterprises (dba, BAK Industries).
Operating Instructions
Opening and Closing the Cover
The BAKFlip MX4 features an integrated buckle system and automatic latching mechanism. To open, simply unlock the cover from either side via its pull latches and fold the panels. To close, unfold the panels and ensure they latch securely.

Image: The BAKFlip MX4 tonneau cover fully closed, providing a secure and low-profile appearance.

Image: The BAKFlip MX4 tonneau cover partially folded, allowing access to the front section of the truck bed.
100% Bed Access
For full bed access, unlock the cover and fold all panels completely up against the cab. Prop the cover in place by tightening the two rods into the underside of the panel. This allows you to drive with the cover partially or fully opened without obstructing the 3rd brake light.

Image: The BAKFlip MX4 tonneau cover fully folded and propped against the truck cab, providing 100% access to the truck bed.
Tailgate Operation
The MX4 is designed to work seamlessly with your truck's tailgate. It features a dual-action tailgate seal, allowing tailgate operation whether the cover is open or closed. When the tailgate is closed and locked, the cover is fully secured.

Image: The BAKFlip MX4 tonneau cover installed on a truck with the tailgate closed, demonstrating secure cargo storage.
Maintenance
To ensure the longevity and optimal performance of your BAKFlip MX4 tonneau cover, regular maintenance is recommended:
- Cleaning: Regularly clean the matte-finished aluminum panels with mild soap and water. Avoid abrasive cleaners that could damage the finish.
- Seal Inspection: Periodically inspect the full perimeter seals and dual drain tubes for any debris or damage. Clear any obstructions to ensure proper water diversion away from the truck bed.
- Hardware Check: Ensure all clamps, bolts, and latching mechanisms are secure. Tighten if necessary.
Troubleshooting
Water Intrusion
The MX4 is designed with dual drain tubes and full perimeter seals to protect against water intrusion. If you experience water in the truck bed:
- Check that the drain tubes are clear of debris and properly routed.
- Inspect the perimeter seals for any gaps or damage. Ensure the cover is properly seated on the rails.
- Verify that the tailgate is fully closed and locked, as this contributes to the cover's security and seal.

Image: Close-up view of the robust sealing mechanism of the BAKFlip MX4, designed to prevent water intrusion.
Latching Issues
If the cover is not latching properly:
- Ensure the panels are aligned correctly with the side rails.
- Check the automatic latching mechanism for any obstructions.
- Verify that the side rails are securely clamped to the truck bed.

Image: Close-up of the integrated latching system on the BAKFlip MX4, highlighting its secure design.
Specifications
| Brand | RealTruck |
| Style | BAKFlip MX4 |
| Model Number | 448130 |
| Exterior Finish | Aluminum (Matte) |
| Material | Aluminum |
| Lock Type | Tailgate |
| Item Weight | 71 pounds |
| Product Dimensions | 68 x 23 x 8 inches |
| Automotive Fit Type | Vehicle Specific Fit |
Warranty
The BAKFlip MX4 Hard Folding Truck Bed Tonneau Cover is backed by a 5-year, hassle-free warranty. Please refer to the official warranty documentation included with your product or contact RealTruck customer support for full details.
Support
For further assistance, technical support, or warranty claims, please contact the RealTruck support team. RealTruck is proudly made in the USA with globally sourced materials and supported by a US-based team.
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