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UnderCover Ultra Flex

Starting At: $989.00

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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.


99 Total
Raymond S.
2019 Ram 1500
5 / 5
3 June 2019
Love the difference of the newer Flex Ultra with the rug on the underside as well as the subdued bla... Read More
Jeff B.
2019 GMC Sierra 1500
5 / 5
28 May 2019
Michael C.
2019 Ford Ranger
5 / 5
28 May 2019
I really haven't had it long enough to rate, but at this time, I would rate it a 5 (or else I wouldn... Read More
Ricardo De Jesus G.
2016 Toyota Tundra
5 / 5
22 May 2019
Josh H.
2017 GMC Sierra 1500
5 / 5
21 May 2019
quality product, looks great, time will tell about durability I watched several install videos prio... Read More
Claudia O.
2017 Ram 1500
5 / 5
19 May 2019