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UnderCover Flex

2016 Chevrolet Silverado 1500

Starting At*: $879

2016 Chevrolet Silverado 1500 Select Bed Length

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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


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.


613 Total
Ryan S.
2021 Ford F-150
5 / 5
8 April 2021
This is my second Flex cover. My only complaint is the small brackets that hold on the prop rods broke very easily on my last unit.
Kenneth M.
2013 Ford F-150
5 / 5
6 April 2021
Fit nice and tight. Easy to operate.
Daniel C.
2021 Ram 2500
5 / 5
31 March 2021
This is my 2nd purchase of the Undercover Flex. Looks great and very functional on my new truck.
Edward L.
2019 Honda Ridgeline
5 / 5
30 March 2021
Love the fact that it is lockable
Mark M.
2021 Ram 1500
5 / 5
26 March 2021
I have owned 5 Undercover bed covers over the years and this one is my favorite. It took a little extra time to align everything but once installed it looks amazing and now I can use my entire bed instead of just part of it or having to take it off. I highly recommend the Flex cover!
Jerry S.
5 / 5
21 March 2021
Great product
This is my second Undercover, great product, and great price.
David B.
2015 Ford F-150
5 / 5
21 March 2021
My son installed one of these on his Ford truck and really liked the appearance and functionality. He purchased this as a gift for me.
Wallace G. W.
2021 GMC Canyon
5 / 5
20 March 2021
Juan S.
2021 Ford F-150
5 / 5
17 March 2021
It looks great
J.R. P.
2021 GMC Sierra 3500 HD
5 / 5
12 March 2021
My 4th one purchased