To see if this custom-fit item will work for you please tell us what vehicle you'll use it with.
Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.
Error submitting comment. Please try again momentarily.
You don’t have to take the cover off when you need the full bed. The BAKFlip MX4 folds up in four sections so you can open two-thirds or the entire bed in seconds. Built-in prop rods hold the cover upright for driving with it open, and rubber bumpers keep it from touching the cab or rear glass. Even when it’s folded upright, your third brake light stays visible.
Each panel is made from 1/2" thick, rustproof aluminum reinforced with a premium density foam core. It’s strong enough to support up to 400 lbs of evenly-distributed weight when closed, so you can set gear on top without worry. The panels latch automatically when folded down, and once your tailgate is locked, the bed stays secure from tampering.
Rain, sun, and snow don’t stand a chance against the MX4’s durable construction. The matte black finish resists scratches, scuffs, and UV damage, while rubber perimeter seals and built-in drain channels keep water out of the bed. The aerodynamic design also cuts wind drag for smoother driving and better fuel efficiency.
The cover sits just 1-1/4" above the bed rails for a sleek look that doesn’t ruin the truck’s lines. Because it mounts inside the rails, you can still use stake pockets for accessories like ladder racks or tie-downs. It also works with the BAKBox2 collapsible toolbox for extra organized storage under the cover.
Everything clamps on without drilling. The aircraft-grade aluminum rails secure to the inside of the bed with included bolts for the hinge rail up front. Slotted brackets give you easy adjustment for a snug fit using just a wrench—no extra tools or permanent modifications needed.
Customer Satisfaction Score:
98% were satisfied with this product
2% of customers were not satisfied
Ratings & Reviews
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!
Do you have a question about this Tonneau Cover?
Info for this part was:
At etrailer we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.
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.