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UnderCover Ultra Flex

Starting At*: $1009

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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.


651 Total
Omar P.
2021 Jeep Gladiator
5 / 5
11 May 2021
Amazing product
Charles W.
2020 Ram 2500
5 / 5
11 May 2021
Great Cover went on easily and looks great.
William T.
2020 Ram 1500
5 / 5
4 May 2021
2nd Ultra Flex...Love It!!
Francisco T.
2021 Toyota Tacoma
5 / 5
1 May 2021
Leopoldo V.
2019 Chevrolet Silverado 1500
5 / 5
24 April 2021
Good Quality
Arsenio A.
2018 Chevrolet Silverado 1500
5 / 5
23 April 2021
Good Quality
Randall S.
2021 GMC Sierra 1500
5 / 5
10 April 2021
It seems very well built!!
Robert E S.
2021 Toyota Tacoma
5 / 5
9 April 2021
Seems like a wonderful product. Dealer was exceptionally diligent in their service and accommodations for installation
2020 Ford F-150
5 / 5
24 March 2021
Had this installed with a Bed Rug mat. Rain first day, rug is still dry. Have a long drive planned and wanted some measure of security for items in bed. Looks great.
Paul B.
2021 Nissan Titan
5 / 5
19 March 2021
I Love it.