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UnderCover Flex

Starting At*: $879


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The UnderCover Flex is a hard folding truck bed cover that gives you the ultimate control of your truck bed, offering three secure riding positions. The cover is easy to install and remove with our easy clamp-on design, and is mounted flush with your trucks bed rails making it the most watertight hard folding cover on the market. The Flex is constructed with heavy-duty aluminum panels providing strength and durability.

Each Flex has a bed rail mounting system equipped with rubber seals and drain tubes that carry water away from and out of the bed, keeping your gear dry and secure. The Flex is backed by a 3-year warranty making it America's favorite hard folding tonneau cover.

If you wish to learn more about the UnderCover Flex visit our FAQ page



  • Low-Profile Design w/ an UV Protective Black Finish
  • Aluminum Top Skin Panel
  • Three Secure Driving Positions, with 100% Bed Access
  • Dual Action Tailgate Seal for Easy Operation
  • Made in the USA


Please feel free to make use of the UnderCover Flex installation instructions below to assist you. Upon purchase you’ll receive vehicle specific instructions. However, if you have further questions or need technical assistance, please call one of our knowledgeable installation experts at 866-900-8800.


The UnderCover Flex carries a 3-year warranty.

Full Bed Access

Built-in prop rods secure the cover allowing your truck to be driven with the cover fully open.

Weather Resistant

Rubber seals and drain tubes channel water away from and out of the bed.

Heavy-Duty Construction

The Flex is constructed with heavy-duty Aluminum panels providing strength and durability. The SpeedKlamps lock the cover in place at the rear, adding strength and stability for your off-road adventure.


477 Total
steven s.
2019 Ford Ranger
5 / 5
7 July 2020
Excellent quality and materials
Lyle M.
2018 Ford F-150
5 / 5
19 June 2020
Will certainly add value to the vehicle
Richard C.
2020 Toyota Tacoma
5 / 5
11 June 2020
Great product very pleased with the quality and low profile look. Very easy to operate and locks automatically. It folds up close to the back window to get the full use of bed without removing cover.
Curtis F.
2019 GMC Sierra 1500
5 / 5
6 June 2020
Easy to install, looks great on the truck.
Ryan C.
2017 Toyota Tacoma
5 / 5
30 May 2020
Really enjoying the cover. I’ve already gone camping since installation and it was great to have the peace of mind of knowing my gear was safe while away from my truck!
Brian H.
2018 Toyota Tacoma
5 / 5
30 May 2020
Love the cover. Great product.
Luis E.
2017 Ram 3500
5 / 5
29 May 2020
Extremely happy with product, excellent quality and looks great
John H.
2020 GMC Sierra 1500
5 / 5
28 May 2020
After the quick and easy installation; I love the way the UnderCover Armor Flex looks on my truck. Sleek and Solid design complements my truck perfectly. I had a plastic clip break while installing (Completely my fault), I was able to contact UnderCover customer service. I was helped quickly at no charge I was shipped two new clips (Prop Rod holders). I would recommend this cover to everyone (whic... Read More
Scott J.
2019 Ford F-250 Super Duty
5 / 5
22 May 2020
This is the second one I have owned and would recommended them to several friends. Seven I know have purchased them.
donald d.
2008 GMC Sierra 1500
5 / 5
22 May 2020
very pleased with this top. very easy to install. only problem is, the clamps for the prop rods. one broke off getting prop rod out to hold top up, the other keeps coming off when i pull the prop rod out to use.