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Hauling taller gear doesn’t mean you have to remove your cover. The MX4 folds in three sections so you can open just part of the bed or flip it all the way up against the cab. Prop rods lock it upright so you can drive with the bed completely open. With the panels folded down, it sits low inside the bed rails for a clean, flush look and full use of stake pockets and tie-downs.
The MX4 is built for daily work and weekend use. Its 1/2" thick aluminum panels are rustproof and backed by a premium-density foam core for added strength. The cover is rated to hold up to 400 lbs of evenly distributed weight, so it stands up to heavy snow or gear without sagging. The matte black finish resists scratches, scuffs, and UV damage, keeping it looking sharp over the long haul.
Rain, snow, or car wash—your cargo stays protected. Matte black rubber seals and a built-in drainage system direct water away from the bed. A rear seal lets you open and close the tailgate whether the cover is up or down, and when the tailgate is locked, the automatically latching panels keep everything inside secure.
Getting it installed is straightforward. The aircraft-grade aluminum rails clamp to the inside of the bed rails—no drilling required. Bolts secure the front hinge rail to the frame rails so everything stays aligned and solid. The finished setup is low-profile, aerodynamic, and ready to pair with compatible rack systems or a BakBox2 (sold separately).
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!