RealTruck BAKFlip MX4 (GEN 3) Hard Folding Tonneau Cover
- Finish Matte Black
- Material Aluminum
- Install 30 mins or less
- Difficulty Level 1: Simple installation
Questions about fitment? Live chat or call 866-235-4715
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- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
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Specifications
| Brand | RealTruck BAK |
|---|---|
| Part number | 448352 |
| UPC / GTIN | 192631075912 |
| Actual Color | Black |
| Cargo Light Included | No |
| Color | Black |
| Compatible with Bed Caps | No |
| Cover Color | Black |
| Cover Material | Aluminum |
| Design | Low Profile |
| Drilling Required | No |
| Electric | No |
| Finish | Matte Black |
| Front Opening | No |
| Full Bed Access | Yes |
| Lockable | No |
| Low Profile | Yes |
| Material | Aluminum |
| Mounting Hardware Included | Yes |
| Operation | Fold-Up |
| Paintable | No |
| Painted | No |
| Rails To Install | No |
| Remote Control Included | No |
| Sits on Truck Rails | No |
| Style | Hard Folding Cover |
| Tool Box Compatible | Yes |
| Tool Box Included | No |
| Type | Hard |
| Universal Or Specific Fit | Specific |
| Made in America | Yes |
| Country of Origin | US |
| Warranty | 5 Years |
| Weight (lbs) | 71 |
| Dimensions (L x W x H) | 70.375 x 24 x 7.625 in. |
| Install time | 30 mins or less |
| Difficulty | Level 1: Simple installation |
California Proposition 65 warning applies to this product. www.P65Warnings.ca.gov
Features
- THE ORIGINAL. OFTEN IMITATED. NEVER DUPLICATED: MX4 defined the hard folding category—and still sets the benchmark with patented features, premium materials, and a proven design built to perform.
- BEST-IN-CLASS AUTOMATIC SECURITY COMES STANDARD: The patented auto-latch system engages immediately on closure—no separate locking action required—so your gear is locked down the moment it closes.
- SEALED EDGE-TO-EDGE TO KEEP WEATHER OUT: Advanced seals and precision-fit clamps create a tight, edge-to-edge barrier to block out the elements and keep your cargo dry.
- BUILT STRONGER. BUILT BETTER. BUILT TO LAST: Premium-grade, multi-layer aluminum construction over a high-density core delivers a stronger, more durable surface that’s tested for years of reliable performance. Don’t settle for single-layer construction that bends under pressure.
- FULL BED ACCESS WITH NO COMPROMISE: Simply fold to the cab, secure, and safely drive with the cover fully open—no removal needed for large cargo. Plus, it’s the industry’s only hard fold that doesn’t block your 3rd brake light.
- EASY ONE-PERSON INSTALL—UNDER 30 MINUTES: The simple click-in design lets you install it yourself in under 30 minutes—no extra hands required, and no drilling required for most trucks.
Installation
- Estimated install time30 mins or less
- DifficultyLevel 1: Simple installation
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
The best-selling truck bed cover in the world just got better.
Introducing the new and improved RealTruck BAKFlip® MX4 (GEN 3 Model Year 2025)—an evolution of RealTruck’s most popular tonneau cover. This next-generation upgrade builds on everything truck owners already love about MX4, now enhanced with improved functionality, greater durability, and elevated security.
The new and improved BAKFlip MX4 is constructed primarily from alloy materials, including heavy-duty aluminum top panels and side rails. Reinforced with high-density polymer cores, each panel delivers a 22 percent increase in overall strength compared to the original model.
Security is also enhanced. In addition to BAK’s patented auto-latching system, which automatically secures the cover when closed, the BAKFlip MX4 (GEN 3) features re-engineered lock components for improved resistance to forced entry compared to the GEN 2. No matter the cargo you’re transporting, you can rest assured knowing your gear’s protected.
When the weather turns, the BAKFlip MX4 (GEN 3) holds strong. Revised EPDM rubber perimeter seals and tight-fit clamps provide our best seal yet, preventing seepage between the bed cover and bed rails. At the rear of the cover, a 13 percent longer dual-action tailgate seal provides weather protection for the tailgate.
The BAKFlip MX4 isn’t only durable; it’s also sleek and stylish. Unlike competitors, the BAKFlip MX4 sits flush with your pickup’s bed rails, practically disappearing into your truck’s profile. And with a sleek, textured matte black finish across all surfaces, the MX4 looks great whether open or closed.
Installation is streamlined thanks to an improved click-in mounting system, reducing setup time by 12 percent. Operating the cover is just as simple—drop the tailgate, release the rear latch mechanism, and fold the cover toward the bulkhead. If full bed access is required, fold the cover flush against the rear window—third brake light visibility remains unobstructed in any position.
PRODUCT HIGHLIGHTS
- High-density polymer-reinforced aluminum top panels are 22 percent stronger than the original MX4
- Precision-engineered aluminum side rails and frame
- Striking textured black finish across all components
- Folds against the cab for 100-percent bed access
- Re-engineered prop rod clips for a secure hold
- Premium rubber bumpers protect the cab when folded into the upright position
- Re-engineered automatic latching panels offer improved security over the GEN 2 design
- Comprehensive 3rd brake light visibility in all positions
- Simple one-person installation
- 12-percent quicker installation with all-new click-in design
- Re-engineered perimeter seals and tight-fit clamps for superior weather protection
- Extra-long, dual-action tailgate seal available on most applications
- Integrated water drainage system
- 400-lb. weight capacity (evenly distributed)
- Assembled in the USA (Missouri)
- Simple bolt-on, click-in installation in under 30 minutes
- 5-year warranty supported by dedicated product experts and customer service team based in the USA
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
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