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UnderCover Ultra Flex

Starting At*: $989

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A hard folding truck bed cover that comes with overwhelming new features and is topped off with an alluring matte finish. The Ultra Flex is in a category of its own. From the irresistible outward appearance to each component beneath the cover, the Ultra Flex has been carefully crafted to be the ultimate all-purpose truck bed cover.

All-new features that accompany the Ultra Flex include an integrated luminous rail light system for enhanced night vision, and a dual action tailgate seal, allowing for easy operation and you to close the tailgate with the cover-up or down. Multiple riding positions allow the user to ride with full access to their bed, and full weather protection is available if the cover is in the fully closed position.

Ultra Flex is an easy clamp-on application and can be installed and removed easily with our newly designed L-Rail’s. What’s more, the Ultra Flex is backed by a 5-year warranty, making it the most desirable folding cover on the market.

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


  • Ultra Low-Profile Design w/ a Stylish Matte Black Finish
  • Integrated Luminous Bed Rail Light
  • Carpeted Underpanels Provide a Finished OEM Look
  • Dual Action Tailgate Seal for Easy Operation


Please feel free to make use of the Ultra 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 Ultra Flex carries a 5-year warranty.

Stylish Matte Finish

Solid aluminum panels polished with stylish matte black finish.

Ultra Finish Under Panel

A refined and Ultra tough carpet-like finish gives the Ultra Flex an OE look and feel.

Integrated Rail Light

The integrated luminous rail light provides illumination in your truck bed at night.


605 Total
Kenny J.
2020 Toyota Tundra
5 / 5
18 January 2021
I like The flat surface easy to flip up and put down very secure for what I can see now I can keep my personal items in the back of the truck
Bruce d.
2020 Ford F-150
5 / 5
13 January 2021
I had an Undercover UltraFlex on my previous truck and it worked perfectly and looked great. I went with the same tonneau on my new truck! It was easy to self-install.
Jerry T.
2021 Chevrolet Silverado 1500
5 / 5
11 January 2021
Very nice cover. Really like the smooth matte finish and the low profile on my truck. Fits excellent is very solid.
Louis C.
2020 Ram 1500
5 / 5
5 January 2021
Truck looks awesome, it's a great cover. I am happy with my purchase.
chris g.
2009 Chevrolet Silverado 1500
5 / 5
30 December 2020
fleet tire of russellville arkansas was super helpful and friendly. great customer service.
Arthur N.
2020 Ford F-150
5 / 5
29 December 2020
Great looking product
Jennifer M.
2021 Toyota Tacoma
5 / 5
24 December 2020
Very happy with the product and the service from Mobile Living.
Richard W.
2020 Ford F-150
5 / 5
22 December 2020
So impressed with the function and durability of our first UnderCover Ultra Flex on a 2018 Ford F150. We purchased one for our 2020 Ford F150.
Chuck H.
2020 Nissan Titan
5 / 5
20 December 2020
This is my second Undercover Ultra Flex. I researched every truck bed cover. This by far is the Best folding cover on the market!
John S.
2013 Ford F-150
5 / 5
18 December 2020
Great product easy to install