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When you need to haul something tall or oversized, you don’t have to take the cover off. The BAKFlip MX4 folds in sections so you can open part or all of the bed in seconds. Prop rods hold it upright when you want the entire space clear, and integrated buckles keep it secure in any position while you drive. That means gear, plywood, or bikes can fit without losing your bed protection.
Keeping tools and gear safe matters most when the truck is parked. The MX4’s automatically latching aluminum panels lock down tight whenever you close the tailgate, creating a solid barrier that works with your existing tailgate lock. The design keeps everything sealed and secure while still letting you open or close the tailgate with the cover up or down.
Rain, sun, and road grime don’t stand a chance against the MX4’s 1/2" thick rustproof aluminum panels and premium density foam core. The matte black finish resists scratches, scuffs, and UV damage, so it stays looking clean even after years of use. Rubber perimeter seals and built-in drain channels help direct water away from the bed to keep your cargo protected from the elements.
A cover shouldn’t ruin your truck’s lines. The MX4 sits flush inside the bed rails for a smooth, low-profile look that blends right in. Because it mounts inside the rails, you still get full use of your stake pockets and raised side rails for accessories or racks. Installation is straightforward with no drilling required—just clamp the aircraft-grade aluminum rails in place and tighten them down.
The MX4 isn’t just for keeping things dry—it’s built to handle real work. The rigid aluminum panels are rated to support up to 400 lbs of evenly distributed weight, so you can load up extra gear on top when you need it without worrying about flexing or sagging. It’s a practical mix of security, strength, and convenience that stands up to daily use year-round.
Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.
Katie Osborne: Katie Osborne with trucks hero here to tell you what makes this Backflip MX for the number one selling hard truck bed cover on the market. The aluminum encased panels provide security and weather protection when closed. And when folded open, it provides full bed access, plus you can then drive it around town by securing it with a prop rod. And of course, this low profile matte black finish looks great on any truck.
Ratings & Reviews

Rob
6/4/2025
The BAKFlip after 2 years is still functioning great. I fixed the curling cushion by applying some strong adhesive to the spots that had detached, taped it in place and let cure for a couple of days. That solved that issue. Would continue to recommend the BAKFlip to others.

Jenny N.
4/4/2022
You mentioned that the glue holding the pads are failing. I wanted to see if you would be able to send a picture to show the locations.

Sherry H.
5/19/2020
Its still amazing. Works just like its suppose to glad I made the purchase.

Jason
12/11/2023
The cover is still excellent and keeps our items dry and secure on those road trips. I stand by my initial review and still wish the weatherstripping would stick the the spray in liner better but its only been a minor annoyance that hasnt resulted in any water getting into the bed.

Martin Z.
9/19/2018
Great cover holds up really well, no problems
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Claire H.
7/14/2026
Thanks for the great feedback! We're glad you're enjoying the tonneau cover and that being able to use almost the entire truck bed when it's open has been such a big plus. It's also nice knowing your gear stays secure when you lock the tailgate. We appreciate you mentioning the clamps too—that kind of feedback is always helpful. Thanks again, and we hope you keep enjoying your new cover!