UnderCover ArmorFlex Truck Bed Cover

Starting at $1,029.00


The new ArmorFlex hard folding cover is designed to protect your truck bed and its contents while maintaining its strength, style, and durability. Heavy-duty panels are coated with a LINE-X® specialty automotive coating designed to provide advanced protection from dents and scuffs, even in the most extreme environments. The dual-action tailgate seal offers universal tailgate operation, allowing you to close the tailgate with the last panel of the cover-up or down. ArmorFlex is proudly made in the USA and comes backed by a 5-year warranty.

  • Heavy-Duty Panels w/ Premium-Grade LINE-X® Coating
  • Low-Profile Design w/ a Stylish Matte Black Appearance
  • Dual Action Tailgate Seal
  • Automatic Latching Panels
  • Made in the USA


Please feel free to make use of the UnderCover ArmorFlex installation instructions below to assist you with the installation. 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 ArmorFlex carries a 5-year warranty.


Is the ArmorFlex Waterproof?
The ArmorFlex is weather resistant, utilizing rail channels and drain tubes to move water away from the bed. Ultimately, no folding cover is completely waterproof as there are tailgate gaps and other areas that may allow some intrusion.

What is the install time on the ArmorFlex?
The ArmorFlex can usually be installed in about 45 minutes.

Can I drive with the cover in the upright position?
Yes. The ArmorFlex utilizes strut mounts to stabilize the cover while driving.

Will the cover work with a 5th wheel hitch?
Yes. There are two available cover positions while pulling a 5th wheel. Upright and ¾ bed access.

How fast can I drive with the cover in the upright position?
We do not assign a speed rating to the ArmorFlex in the upright position, but it is well equipped to handle legal interstate speeds.

What is the warranty on the ArmorFlex?
5 Years on workmanship, materials, and hardware.

Can I see out the back window with my ArmorFlex fully upright?
No. The cover in the upright position will block view out the back window.

How easily removed is the ArmorFlex cover?
Simply unscrew the two elevator bolts and lift!

How can I get the side seals to lay flat on the ArmorFlex Cover?
After a day or two, direct sunlight will be absorbed and help the seals lay flat.

Do I need to drill into my truck when installing the ArmorFlex?
No. The ArmorFlex utilizes clamps and a no-drill installation.

Does the ArmorFlex work with a standard toolbox?
No. ArmorFlex cannot be installed with a toolbox.

How secure is the ArmorFlex cover?
The ArmorFlex secures your cargo with the help of a tailgate lock. The only access point is the pull cord underneath to open the cover. If your tailgate is locked, your cover is locked.

Where is my ArmorFlex manufactured?
All UnderCover products are proudly made in the USA.

Is the ArmorFlex compatible with my bedliner?
Yes. The ArmorFlex will work with BedRug, spray-ins and any under the rail bed liner. ArmorFlex is also compatible with many aftermarket bed caps.

Damage Resistance

The ArmorFlex truck bed cover features LINE-X® specialty automotive coating for superior protection against scuffs, dents, and dings even in the harshest of environments.

Matte Black Appearance

The LINE-X® coating provides a stylish matte black finish appearance to your truck bed cover.

Dual Action Tailgate Seal

The dual-action tailgate seal offers universal tailgate operation, allowing you to close the tailgate with the last panel of the cover-up or down.


295 Total
Aaron G.
2020 Ford F-150
5 / 5
5 October 2020
This product is amazing in installation, function and appearance. I couldn't be happier.
Troy B.
2020 Chevrolet Silverado 2500 HD
5 / 5
4 October 2020
Everything was great. The two Plastic clips that hold the support rods to the bed rail were broken. I will email the place where I purchased it. Other than that This is a Great Quality bed cover! Very easy to install! I will recommend this to all my friends.
Linda M.
2020 Ford F-350 Super Duty
5 / 5
2 October 2020
neat and clean lines
John T.
2020 Chevrolet Silverado 1500
5 / 5
27 September 2020
Undercover Products are simply the BEST on the market
Jason H.
2020 Ram 1500
5 / 5
26 September 2020
Great product. Just as advertised.
Martin O.
2020 Ford F-150
5 / 5
17 September 2020
Very happy with the purchase. Product has great flexibility and has added value to my truck. Proline Truck Gear staff were very helpful and professional.
Henry R.
2020 Honda Ridgeline
5 / 5
4 September 2020
size of drain needs to be more adaptable
James S.
2020 GMC Sierra 2500 HD
5 / 5
7 August 2020
The 3 rubber spacers were not needed for the side rails. When they were installed it made it impossible to clamp the side rails down flat. Removed the rubber spacers and they installed beautifully. Loved the way Undercover cut out the side rail for the grab handle on the GMC multi function tailgate. Side rail fit perfectly.
Linda K.
2020 GMC Sierra 1500
5 / 5
3 August 2020
Love how easy it was to install with product instructions. Also the look is great and water resistant
shannon m.
2018 Chevrolet Silverado 1500
5 / 5
1 August 2020
Looks good and does the job.