BAKFlip MX4 New Features: America’s #1 Selling Hard Folding Cover Gets An Upgrade
The BAKFlip MX4 is easily one of the simplest heavy-duty, no-fuss truck bed covers on the market today. Sporting a sleek, premium matte finish and sealed, flush-mounted design, the MX4 ensures it can stand up to some seriously rugged environments—while looking really good in the process. Check out some of the smart new features added to the MX4 this year.
You didn’t buy a pickup solely for work commutes, the kids’ extracurriculars, and that higher vantage point while driving, right? No! You got that truck to haul. Whether it’s heavy and messy construction materials or high-cost tools, equipment, or sports gear, you wanted a sturdy and spacious area out back for storage and transport.
In order to do that effectively though, you need a way to keep both your truck and your cargo protected, undamaged, and ready for the next adventure. That’s where the BAKFlip MX4 from BAK Industries comes in. We’ve covered the MX4 on The Engine Block before—check it out here and here—but BAK debuted an upgraded version of the much-loved tonneau cover at SEMA 2019 with some exciting new features worth sharing.
Let’s dig in.
What is the BAKFlip MX4?
The BAKFlip MX4 is a hard-folding cover, crafted with a premium-density foam core topped with ultra-durable aluminum panels and then treated with a flat matte finish. These panels are easy to operate, flipping open to allow partial or full bed access in seconds. And the construction ensures that they can take a beating—rated to hold as much as 400 pounds of evenly distributed weight while resisting scratches, dents, and fading from harmful UV-rays.
The MX4 mounts flush with the truck bed, creating an extremely low-profile design that nicely complements OE styling, keeping things looking factory-fresh. Plus, a dual-action tailgate seal means you can close the truck bed cover with the tailgate in the closed or open position, and a patented latch system (cleverly concealed under the cover) lets you lock each panel into place individually and automatically. This versatility is a large part of why the BAKFlip MX4 is America’s #1 hard-folding tonneau cover.
Other unique features of the MX4 are the EPDM outer rail seals for maximum water resistance, an injection-molded latch housing for long-term durability, and a simple no-drill, clamp-on installation. (In fact, installation only takes about 30 minutes!)
New Features
It looks like BAK Industries went and doubled down at SEMA 2019, giving the BAKFlip MX4 a few exciting new features, as well as upgrading a few of those already on the product.
First, the company added some nice radius corner pieces to the top of the cover. These finished corner caps not only have a softer seal, but also clean up the cover’s edge, streamlining the overall appearance in a classy, low-key way.

In addition to the corner upgrades, BAK also jazzed up the MX4’s overall profile. The company refined the underside of the cover, tightening and honing the look for a more seamless, sleek design. Some of those stand-out improvements include new matte-black elevator bolts and clamps to match the rugged black upper panels, new molded bumper pads, and a new prop-rod holder.
“This heavy-duty, all-season truck bed cover is designed to perform in extreme conditions,” says BAK Industries. “MX4’s resilient infrastructure is for everyday use, featuring NEW upgrades to the prop rod clips, rails, elevator bolts, and the A-panel and B-side bumpers that provide enhanced functionality and a more complete matte-finish look and feel.”

All of these new features make the BAKFlip MX4 look right at home on your truck, giving it an even more refined finish than before. Thanks to the MX4’s existing reputation for durability—now paired with these upgrades—there’s no doubt in our mind that it will continue its run as the top-dog hard-folding cover in America.
Don’t forget that every single BAKFlip MX4 comes with BAK Industries’ comprehensive extended five-year warranty, giving you peace of mind when using this truck bed cover to its maximum potential.

