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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
  • Made in the USA


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.


492 Total
Tchon M.
2020 Jeep Gladiator
5 / 5
29 June 2020
looks good.
Jerold S.
2018 Chevrolet Silverado 1500
5 / 5
25 June 2020
The day after it was installed we received 5.5 inches of rain and the bed of my truck remained dry.
Ken U.
2020 Toyota Tundra
5 / 5
24 June 2020
Not a bad thing to say about this product. Fit my Tundra perfectly and installation was a breeze. Lightweight yet super solid and strong. Highly recommend!
Charles H.
2019 GMC Canyon
5 / 5
24 June 2020
Love the looks of the cover and love the light in the bed of the truck
Joey S.
2020 GMC Sierra 2500 HD
5 / 5
22 June 2020
Had broken drain plug nipple but customer service is sending a new one. I have had this cover before. Nice product
Adrian R.
2020 Chevrolet Silverado 2500 HD
5 / 5
17 June 2020
Great product, well built! This is the second cover I've own. The first one I owned 4 years. Bought a new truck and immediately bought the cover.
Jose Ubaldo J.
2017 Ram 1500
5 / 5
16 June 2020
Good Quality
2020 Chevrolet Silverado 1500
5 / 5
13 June 2020
i love it, easy installation looks great. In shipping the clip that holds the prop rail was broke so I am wondering if I can get a new one shipped to me?
Brian E.
2019 Ram 1500
5 / 5
12 June 2020
Great cover, checked with YouTube before to see how to install. I did notice that the reviewers were showing a storage bag for inside the cover. I didn't receive one in my purchase, was it missed in packaging?
Gregory P.
2019 Ram 1500
5 / 5
10 June 2020
Looks awesome, def worth what I paid.