Undercover Ultra Flex Tonneau Cover Vs Undercover Armorflex

Undercover Ultra Flex Tonneau Cover Vs Undercover Armorflex

There are many different types of pickup truck bed covers on the market, and it’s very possible that you’ve seen the Undercover tonneau covers on the internet. Undercover’s Ultra Flex Tonneau and Armorflex truck bed covers are two of the most popular on the market, with amazing features and affordability.

Due to similar features and pricing, the challenge lies when you have to choose the best one among them. So, here’s a complete guide to assist you in choosing the best one.

Undercover Ultra Flex Tonneau Cover Vs Undercover Armorflex Comparison


Product Undercover Ultra Flex Tonneau Cover Undercover Armorflex
Panel Build Aluminum Aluminum
Dimensions 28 x 68 x 8 inches 82 x 8 x 32 inches
Design Type Foldable Foldable
Design Finish Matte finish Matte finish
Exterior Black Coated with LINE-X
Drill Required No No
Water Resistance Yes Yes
Net Weight 70.1 Pounds 59.9 Pounds
Holding Capacity 400 Pounds 300 Pounds
Tailgate Dual-Action Dual-Action
Corrosion and Dent Resistance Yes Yes (Only Dent)
Installation Time Approximately 15 to 20 minutes Approximately 15 to 18 minutes
Tools Required for Installation No Power Tools required Require small tools
Profile Low Ultra-low
Warranty 5 years 5 years


Difference Between Undercover Ultra Flex Tonneau Cover Vs Undercover Armorflex

If you’re deciding between the Undercover Ultra Flex and the Undercover Armorflex tonneau covers, you’re probably curious about the differences. We’ve put up a quick comparison of the most significant differences between these two variants so you can decide which is best for your truck.


When it comes to the build material, we all desire the greatest industry-grade material in our products, and Under ArmorFlex and Ultra Flex cover are no exception. Both are built from high-quality industrial materials.

To be more specific, the UnderCover Ultra Flex is constructed of aluminum panels that are both lightweight and sturdy. Not only that, but these aluminum panels are also extremely resistant.

The UnderCover ArmorFlex cover is constructed of high-quality aluminum-grade panels as well. To make it even more extreme, it features a LINE-X automotive level coating to protect the cover against dents and scratches in rain and snowstorms.

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Weight Capacity

One of the most significant considerations when purchasing a pickup truck bed cover is the weight capacity. So, in this scenario, both UnderCover Tonneau covers have a high holding capacity and can easily support most large loads, thanks to their industry-grade construction.

Both the UnderCover Ultra Flex and the Armor Flex have heavy-duty aluminum panels that can support weights of up to 300 to 400 pounds.

In this case, the Ultra Flex is the superior option because it can easily support 400 pounds. However, according to the manufacturer, the Armor Flex can only support up to 300 pounds of weight.

As a result, adding more weight than the required amount is not advised. Both of these bed covers have a high weight capacity and can withstand a lot of weight without being damaged.

Resistance and Longevity

Another crucial factor to consider when buying a truck bed cover is resistance and longevity. Because you never know whether the weather will be sunny or rainy, it’s critical that these bed covers can take both and last longer than standard truck bed covers.

When it comes to resistance, the Ultra Flex has UV resistance, which means it can protect you from UV radiation. The UV protection adds extra protection to the cover, allowing it to last longer. Furthermore, with UV protection, the color of the cover does not fade.

Additionally, the UnderCover Ultra Flex is corrosion and dent resistant, allowing it to last longer and be more durable.

The Armor Flex, on the other hand, provides scratch, dent, and scuff resistance. It can also withstand any weather because it has a LINE-X grade coating. Ultra Flex, on the other hand, comes out on top since it is more resistant and long-lasting than Armor Flex.

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When it comes to design, both covers have a low-profile design that makes them appear more attractive and elegant. When the truck bed cover is installed and you’re driving at a high speed, low-profile designs are extremely useful.

Both truck covers in this case have an aerodynamic shape, which means the air will not generate resistance and you will be able to drive easily without any trouble. The low-profile design helps you get greater mileage and avoids unwanted drag, which is a plus.

Due to its extremely low-profile design, the UnderCover Armor Flex marginally outperforms the Ultra Flex. So, if you have to choose between a better design, the Armor Flex is the superior choice.


There may not be any good covers on the market for water resistance or waterproofing, including the Ultra Flex and Armor Flex. However, as compared to standard truck bed coverings, these two are the better choices, as these truck bed covers are exceptionally water-resistant but not entirely waterproof.

The Ultra Flex cover features rubber seals that keep water out of the bed. It also comes with a tailgate seal, which provides additional water protection.

The UnderCover Armor Flex, on the other hand, offers similar water resistance. It also includes rubber seals and a seal on the tailgate, which helps to keep water out.

Furthermore, both covers include rail mounting mechanisms that allow water to escape from the tubes fitted to the truck. As a result, the cover will stay dry, and very little water will get inside. Furthermore, these coverings come in handy when you want to have your truck washed without having to remove it.

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Dual-Action Tailgate

When it comes to opening the tailgate, both truck bed covers have excellent functionality. You can easily open and close the truck tailgate because they both have seals to open and close the tailgate.

The convenience of the product has been prioritized by the manufacturer, which has improved the ease of use. Regardless of whether the tailgate is open or closed, both bed covers can be folded or opened.


Both the UnderCover Ultra Flex and the Armor Flex provide a high level of protection and security. Both models have a tailgate locking system, making it simple to secure them to the truck. Furthermore, both covers have an interlock mechanism that helps in locking.

Both the Armor Flex and the Ultra Flex are capable of keeping your belongings safe from theft. Furthermore, both truck bed covers have rusted locks, allowing you to unlock them without having to carry numerous keys.

Both UnderCover covers have a latching system that ensures each panel is securely in place. Another excellent advantage of these covers is that you can open the tailgate without lifting the cover. Overall, both covers provide the highest level of security and protection.


Both truck bed covers come with a 5-year manufacturer’s warranty. If the cover has a flaw or a broken part, you can have it replaced under the warranty without any problem. Furthermore, because UnderCover provides excellent after-sales assistance, obtaining the warranty should not be an issue.

Accessories Included in the Box

Except for the integrated LED rail lighting system that comes with the UnderCover Ultra Flex cover, neither truck bed cover has any special or extra accessories. This LED system will help you in the dark and provide you with greater convenience.

The UnderCover Armor Flex, on the other hand, does not come with any attachments because they are not required with the cover.

Installation Process of Undercover Ultra Flex Tonneau Cover Vs Undercover Armorflex

When it comes to installation, the UnderCover Ultra Flex and Armorflex are both really simple to set up. Furthermore, installing them does not necessitate the use of any heavy equipment. It will take you no more than 15 to 20 minutes to complete the installation. Furthermore, you may install the bed truck cover on your own, without the assistance of another person.

The best aspect about the installation is that you don’t have to drill any holes in your truck to put these truck bed coverings on. When installing the drainage system, however, you may need to drill. Furthermore, while no heavy tools are required for installation, a ½  inch socket wrench is necessary.

Both tonneau covers are extremely light, weighing between 60 and 70 pounds, so you should be able to install them on your own. With these tonneau cover, you only need to tighten the clamps.

If you wish to remove the bed cover without using any tools, the Ultra Flex cover must be immediately released due to the quick-release mechanism.


So, there was the UnderCover Ultra Flex Tonneau vs UnderCover ArmorFlex truck bed cover comparison. Hopefully, our approach will be appreciated, and this comparison will assist you in selecting the best truck bed cover.

Both tonneau covers offer a similar number of features and advantages. Both covers are effective at preventing theft and water damage, but the UnderCover Ultra Flex Tonneau is an excellent choice if you want an ultra-low-profile design, a higher weight capacity, and superior visibility.

The UnderCover ArmoFlex, on the other hand, is a great choice if you prefer the ease of use and durability. In the real world, choosing any of them won’t make a bigger difference.

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