AutoAnything, Inc.
AutoAnything, Inc.
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UnderCover Armor Flex Tonneau Cover

12 Reviews
$1,479.00 - $1,579.00 each
List Price
$1,179.00 - $1,279.00 each
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Product Info
  • Heavy-Duty Panels w/ Premium-Grade LINE-X® Coating
  • Dual action tailgate seal
  • Built with heavy-duty FRP panels for added strength and durability
  • Easily installable and removable without any drilling
  • Offers three secure driving positions
  • Low-profile design mounts flush against your bed rails for a watertight and seamless look
  • Features greater dent resistance than aluminum panels
  • Bed-rail mounting system is equipped with rubber seals and drain tubes
  • Coated with a UV-protective black finish
  • Proudly made in the USA
  • Your UnderCover Amor Flex Tonneau Cover is backed by a 5-year warranty

If you’ve got a truck you love you probably want it to last as long as you can. For a truck bed, a spray in liner like LINE-X® coating can add years to your bed’s life while maintaining great looks and while that helps when you need all of your bed, it doesn’t really help keep your gear dry or safe from prying eyes when you don’t.

If you are going to cover your cargo, wouldn’t it make sense to get a truck bed cover that is built with the same lasting materials that keeps you bed looking great?

The UnderCover Armor Flex Tonneau Cover is crafted from heavy-duty FRP panels with premium-grade LINE-X® coating for the ultimate in abrasion resistance, this seamlessly-designed tonneau gives you full bed access with three secure driving positions. Easy to install and remove without requiring drilling, this water-tight cover mounts flush onto your bed rails for a stylish look.

FPR, or fiber reinforced plastic offers strength and low weight and the addition of LINE-X® coatings increase abrasion resistance, UV-resistance and helps to guard against water intrusion for not only a long lasting tonneau cover, but one that will look good year after year. FPR, unlike aluminum, has very good dent resistance and simply bounces back from hits that would dent an aluminum cover.

One of the problems on many covers is that they can be cumbersome to use with a tailgate, requiring you to lift the cover to open or close the tailgate. The UnderCover Armor Flex Tonneau Cover solves this problem with a unique dual action tailgate seal that allows you to open and close the tailgate with the last panel of this truck bed cover up or down. This means no more two-step tango to close your tailgate saving you time and effort.

Strength, durability, great looks and function are the calling cards of the UnderCover Armor Flex Tonneau Cover. This UV-protected cover also offers a bed-rail mounting system that is equipped with rubber seals and drain tubes to keep your gear dry.

Your UnderCover Armor Flex Tonneau Cover is backed by a 5-year warranty.

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Manufacturer Info

Customer Reviews

Average Rating
12 Customer Reviews
5 Star
7 (58%)
4 Star
3 (25%)
3 Star
2 (17%)
2 Star
0 (0%)
1 Star
0 (0%)

Armor Flex

This cover is exactly what I wanted for my 2016 Chevy Colorado. Fits perfect, fairly easy to install-even for a 71 year old. Looks great.
Posted By James S (TOPEKA, KS) / September 17, 2022
2014 Nissan Frontier

2012 Silverado

I installed this on a 2012 Silverado with factory bed caps. The description says it is to be used without factory bed caps. It will work with factory bed caps but it is very tight opening and closing. It is well built and works as it should. I really like it. I haven't tested how water tight it is, but from the looks of the rubber strips it looks like it is as protected as you can make it. Overall very happy with it.
Posted By Samuel W (ALTON, VA) / May 22, 2021

Exactly what I was looking for

I researched and researched, and researched some more before deciding on the Armor Cover. The Line-X coating is what sold it. This is a high quality cover and very easy to install. Rail end caps were busted when it got here, but Undercover shipped me new ones immediately. A minimal amount of water gets in at the rear corners by the tailgate but not enough to get any cargo wet.
Posted By Corey C (JULIETTE, GA) / April 2, 2020
2018 Ford F-150

2019 DT RAM 1500

Perfect fit, easy installation After several rain showers and couple snow storms the bed still dry Can close bed tailgate without opening the cover first
Posted By Victor Z (GREER, SC) / February 9, 2020
2019 Ram 1500

Easy install

Received it 2 days after ordering even here in Alaska. Very easy installation took less than an hour. Really looking forward to how it keeps things dry and snow-free this winter. I can tell already it's going to be a great add to my truck.
Posted By Brad B (ANCHORAGE, AK) / January 14, 2020
2019 Ford F-150

Undercover Armor Flex

Very well made tonneau cover. Material and workmanship is top notch. Design for my particular vehicle was poor. They could of made it 2" longer and it would of fit a lot better and kept the water out. You will also have to cut your bed caps. Spacer won't help.
Posted By Ricardo R (Miami, FL) / June 5, 2019
2019 Chevy Colorado

Looks great but has a few cheap plastic parts.

During the unboxing I discovered the plastic drain fitting was broken off of one side rail (shipping damage). Also, a couple of spots on the side rail were unpainted. After one week on use the plastic clip that holds the support rod broke off. AutoAnything and Undercover worked to make it right by sending replacement parts at no charge. I have to say the cover looks great on the truck but I was expecting much better quality based on reviews I had read and the higher-end price that I paid.
Posted By David C (WILLIAMSBURG, VA) / February 24, 2019
2018 Toyota Tacoma

Very good Cover, BUT!

I purchased it for my new 2019 Silverado (next gen). It looks great on the truck. BUT tolerances are not quite accurate. My LTZ has motorized for closing up also. To let it work properly, I had to sacrifice some water seals and leave the gaps open.
Posted By Arash M (North Hills, CA) / January 22, 2019
2019 Chevy Silverado

Great Looking, Strong and Easy to Install

Just installed my UnderCover Armor Flex tonneau cover in about 35 minutes using one ratchet wrench and a drill bit. It was pretty straight-forward and the vehicle specific instructions were very helpful. It looks and works great and I have already received some compliments on it. I was pleasantly surprised to see that this cover is strong.
Posted By David G (RICHARDSON, TX) / August 15, 2018
2018 Toyota Tundra

Quality Product

I'm happy with that armor Flex it's solid Construction, looks good and is very functional since I could completely fold it up and out of the way if I'm hauling something big. I had to call their customer service and they were very responsive on small issue.
Posted By Sonata V (SANTA ROSA BEACH, FL) / August 4, 2018
2018 Dodge Ram

Looks good, works well.

i haven't had the cover long, but it looks great and works well. I am pleased with it. One heads up, the ridgeline bed does not lock, but you can add an electronic lock that works off the trucks locking system.
Posted By William B (CLINTON, NJ) / July 22, 2018
2017 Honda Ridgeline

Armor Flex - 2018 Raptor

Unit arrived 1 weeks later than estimate in good shape. Took about 40 alone to install including watching a video. Looks great on the truck and functions as advertised. The ends of the frame that are exposed were unfinished and I painted them black to match.
Posted By Michael H (Poway, CA) / July 8, 2018
2018 Ford F-150