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When it comes to gymnastics, politics and truck bed cargo control-flexibility is key. And, there's no better way to touch your cargo-covering toes than with the Undercover Flex Tonneau Cover. Undercover's first folding tonneau features a sleek, low-profile design that folds away to reveal your entire truck bed.

Featuring 3 folding panels, the Flex cover folds completely forward and back to deliver full bed access and maximum security. The low-profile design sits flush with your truck's bedrails for a super sleek and slippery style that improves MPG, too. And, thanks to the simple clamp system, the Undercover Flex is easy to install and remove with no drilling required.

Crafted from a fiberglass reinforced polymer with a subtle textured finish, the Flex shoulders up to 400 lbs. And, it'll never crack, warp, fade, rust or corrode. Connected by seamless leak-proof rubber seals and featuring an integrated drain tube, the entire assembly keeps your bed clean, dry and secure. Best yet, Undercover backs your Flex Tonneau Cover with a 3-year warranty.


UnderCover Flex Tonneau Cover Customer Reviews

Average Rating

88 Customer Reviews

UnderCover Flex Tonneau Cover

Reviewed by Daniel C (Keystone Heights, FL) Reviewed for a 2015 Dodge Ram — Thursday at 6:30 AM

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Having problems with it leaking right now. Going to take off and reinstall to see if it helps at all.

Looks great, works well

Reviewed by Christopher W (Ferdinand, IN) Reviewed for a 2015 Ford F-150 — Aug 22, 2015 5:18 AM

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I would give this 4.5 starts if I could. The only reason I can't give it a 5 is because of a small water leak. I purchased this to use with an Adarac truck rack and it works well if you're careful with the installation. The rails for the rack must be mounted nearly as far toward the tailgate as possible so the cover can open, and the prop rods need to be adjusted so the open/vertical position isn't perfectly upright and rubbing on the front rack posts.

2014 GMC Sierra Crew Cab

Reviewed by Cody H (Kingsville, TX) Reviewed for a 2014 GMC Sierra — Aug 14, 2015 5:24 PM

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Outstanding cover!!! Autoanything is always awesome but I'm very impressed with this recommendation from them. After a lot of research and back and forth I decided to finally go with a tri fold. I wasn't sure how I'd like it but there's no question about it so far... I love it! Although it's only been a few weeks so far, it's exactly what I was looking for in a tonneau cover. The only downside is that there is no rubber or bumper on the cover when it folded back, cracked the truck light.

UnderCover Flex Tonneau Cover

Reviewed by David B (Rio Rancho, NM) Reviewed for a 2007 Ford F-150 — Aug 12, 2015 7:05 PM

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Awesome cover!!! I have had other covers but this one is by far the best. Easy to install, just over an hour doing it by myself. Looks great, very stable and durable, I have only had it installed a few weeks but have no complaints. I would definitely recommend this to anyone else looking for a that is good looking and offers security.

2013 RAM 2500 - UnderCover Flex Cover

Reviewed by Gus S (HOUSTON, TX) Reviewed for a 2013 Dodge Ram — Aug 12, 2015 7:27 AM

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Want to start off by saying that Justin in customer service was great as I needed a cover fairly quickly and it arrived 4 days earlier than expected. Installation is straight forward however since I have a spray bed liner along with plastic caps along the length of the bed the fit was not great - after spending an additional 45 minutes making adjustments it all came together except for the front of the cab but after going thru a high pressure car wash minimal water leak in the front as expected.

UnderCover Flex Tonneau Cover

  • $821.00
  • Free Shipping
  • Ships Between 9/01 - 9/03
  • What Do You Drive?

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