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Home » Blog » BAKFlip MX4 Vs. UnderCover Ultra Flex Truck Bed Tonneau Cover Comparison

BAKFlip MX4 Vs. UnderCover Ultra Flex Truck Bed Tonneau Cover Comparison

Last Update: January 31, 2023 | Post By John Coker, BSc in Automotive Engineering Technology.
Chief Editor and Technical Writer at AutomoHub

BAKFlip MX4 Vs. UnderCover Ultra FlexIt’s not an easy task at all to pick a thousand-dollar truck bed cover for your vehicle, is it? Things get way more complicated when you have a Chevy or Ford that demands proper fitting and better durability than any random options in the market.

That’s why most truck owners feel at easy to pick up either the UnderCover Ultra Flex or the BAKFLip MX4, as these are the prime choices for said trucks. But which one is the best between BAKFlip MX4 vs. UnderCover Ultra Flex? Well, that’s what we are going to find out in this piece!

Let’s roll!

Table of Contents

  • 1 BAKFlip MX4 Vs. Undercover Ultra Flex Comparison
  • 2 1. UnderCover Ultra Flex Truck Tonneau Cover
  • 3 Versatile Cover
  • 4 Stylish Matter Finish
  • 5 Premium Design
  • 6 LED Lighting
  • 7 Weather Resistant
  • 8 Foldable in 3 Steps
  • 9 Simple Installation
  • 10 2. BAKFlip MX4 Hard Folding Tonneau Cover
  • 11 Specialized for Ford
  • 12 Simple to Set Up
  • 13 Complete Protection
  • 14 Easy to Use  
  • 15 Can Be Opened from Any Side
  • 16 BAKFlip MX4 Vs. Undercover Ultra Flex Truck Bed Cover
  • 17 The Ultimate Decision: Undercover vs. BAKFlip MX4
  • 18 FAQs About BAKFlip MX4 and Undercover Tonneau Cover
  • 19 What is the most secured truck bed cover?
  • 20 Can BAKFlip MX4 go through a car wash?
  • 21 How much can BAKFlip MX4 truck cover hold?
  • 22 Is Undercover Ultra Flex waterproof?
  • 23 Final Words

BAKFlip MX4 Vs. Undercover Ultra Flex Comparison

1. UnderCover Ultra Flex Truck Tonneau Cover

UnderCover Ultra Flex Tonneau coverFeatures at a Glance  

  • Excellent design that fits 2020-2021 Chevy/Silverado/Sierra 2500/3500HD
  • It comes with a superior matte black finish
  • Made up of premium components, including airtight rails and LED lighting for illumination
  • Can be kept fully opened, partially closed, and fully closed
  • Weather-resistant design with waterproof housing

The UnderCover Ultra Flex Hard Folding truck bed cover is probably the most you can ask for. Although you don’t get it at a lower price, it’s definitely going to be a smart investment you are going to make for your truck. Here’s what you should be excited about if you are thinking about owning one for your vehicle!

  • Versatile Cover

The cover fits 2020-2021 Chevy and GMC Silverado pretty easily. Plus, it’s also well-fit for 2500-3500HD. Its 6 feet 10-inch bed capacity is going to be a perfect fit for these vehicles with no room for air leakage.

  • Stylish Matter Finish

You can’t help but admire the stylish matter finish of the cover that highly adds to the look of your entire vehicle. The aluminum panels’ matte-black finish gives it a ‘tough’ dark look that really blends into the awesomeness of your jeep.

  • Premium Design

The truck bed cover features an under-paneling that is completely carpeted. This ensures better and more robust security for the protection of things you will put inside. Not to mention, the entire cover fits in perfectly with the vehicle bed‘s rails leaving no space for water to get inside. This makes it a perfectly watertight truck bed cover at this price range!

  • LED Lighting

The bed rails have LED lighting that illuminates the bed for increased visibility, especially at night. This makes it super easy to pick and drop items beneath the cover without unfolding them.

  • Weather Resistant

What’s crucial for a truck bed cover is it has to be perfectly fitting for any weather out there. The UndeCover Ultra Flex hard folding truck bed cover is exactly what you are looking for. It’s totally weather-resistant so that you can ride the vehicle with the bed cover on at any given moment. Whether It’s raining in torrents or snowing heavily, you have nothing to worry about! Just throw yourself inside the driving seat and get going!

  • Foldable in 3 Steps

The best part is that the cover can be folded in three steps – closed, partially closed, and fully opened. The cover has a couple of prop rods that can be folded into an upright position.

  • Simple Installation

You don’t need to be an expert to set this cover up and get going. The cover is pretty lightweight to handle and impressively simple to arrange and set up. It won’t take more than half an hour for you to install it. It will take a shorter time if you have some sort of experience in using one before.

Buy from amazon

UnderCover Ultra Flex Truck Cover Video Review


2. BAKFlip MX4 Hard Folding Tonneau Cover

BAK BAKFlip MX4 Hard Folding coverFeatures at a Glance:

  • Versatile design for Ford 2015-2018 Ford F-150
  • It comes with a superior matte black finish
  • It needs no drilling and extra tools to set up. Simple and easy to install.
  • Can be kept fully opened and fully closed
  • Pretty lightweight and easy to handle
  • It can be opened from either side of the truck
  • Panels are crafted from aircraft-grade aluminum

Another top-class tonneau cover that you would love to invest in is the BAK BAKFlip truck bed cover. Although the price you pay is not that different from the previous one discussed, it will surely keep you thinking about choosing this one as an alternative. So, what are the features that you should be betting on? Let’s find out!

  • Specialized for Ford

Do you own a Ford 2015-2018 or F-150 with a short bed? Well, this truck bed cover is going to be a perfect fit for you! Its 5 feet 6-inch length fits perfectly on the bed, leaving no space for dust and dirt to make their way inside. That means everything that you keep inside is kept perfectly safe and clean.

  • Simple to Set Up

The BAKFlip truck bed cover should be one of the simplest bed covers to install. You don’t need any drilling on your vehicle bed. All you have to do is set the cover with the help of some easy-to-use clamps, and you are done in no time!

  • Complete Protection

The matte black finish not only adds to the awesome look of your truck but also safeguards your valuables underneath. Keep your items safe from dirt, rain, dust, sun, and most importantly, from theft! Its complete covering leaves no room for water to rush in, so you don’t need to worry about getting everything wet.

  • Easy to Use  

It’s pretty easy to open and close the cover. You can conveniently move the tail-gate up and down. The hinges are properly placed for the cover to fold and unfold itself. This makes it super-easy for you to control the cover. And most importantly, the cover can be completely unfolded, and you will have a 100% truck bed, wasting no space for you!

  • Can Be Opened from Any Side

Another exciting feature of this truck bed cover is that you can easily open it from either side of the truck. No need to go to the rear and to expose the materials inside. And the durable prop rods are there to secure the MX4 in an upright position giving you complete access to the inner side of the bed.

Buy from amazon

BAKFlip MX4 Tonneau Cover Video Review


BAKFlip MX4 Vs. Undercover Ultra Flex Truck Bed Cover

So, now that we have reviewed these two truck bed covers let’s find out the difference between these two covers!

Features UnderCover Ultra Flex Truck Bed Cover BAKFlip MX4 Truck Bed Cover
Suitable for: 2020 – 2021 Chevy/GMC Silverado/Sierra 2500/3500HD 2015-2018 Ford F-150
Bed Size: 6 feet 10 inch 5 feet inch
LED lighting: Yes No
Weight: 70 pounds 71 pounds
Bed Access: 100% 100%
Color: Matte Black Matte Black
Panel Material: Aluminum Aircraft-grade Aluminum
Opening Style: Rear Front and Rear
Folding Option: Fully open, fully closed, and partially closed Fully open and fully close

The Ultimate Decision: Undercover vs. BAKFlip MX4

So, which one should you go for? Well, if you ask us, we would definitely suggest you go for the UnderCover Ultra Flex cover. Now don’t get us wrong; there’s nothing wrong with the BAKFlip MX4. It’s just the fact that the UnderCover comes with a slightly larger bed size and a built-in LED light for better illumination at night! Getting these extra benefits at the same price range should definitely put UnderCover Ultra Flex in a better position.


FAQs About BAKFlip MX4 and Undercover Tonneau Cover

What is the most secured truck bed cover?

Basically, one-piece painted covers have gained fame for being the most secured truck bed cover nowadays. The cream of the corp is the anti-theft-based locks that cover the tailgate. No one can open the tailgate if they don’t unlock the lock first.

Can BAKFlip MX4 go through a car wash?

Obviously, it can. You can hail your car with the BAKFlip MX4 into a car wash. It won’t get a scratch at all, but heavy or rough wash might be harmful. Be aware of it.

How much can BAKFlip MX4 truck cover hold?

Well, it can hold roughly around 400 lbs. You can go for another option if you’re to carry bigger loads than that.

Is Undercover Ultra Flex waterproof?

It isn’t signed as waterproof, but one feature makes it work like water or weatherproof. This bed packs drain tubes to sweep away all the water from bed surface.

Final Words

That was it! Both the UnderCover Ultra Flex and BAKFlip MX4 truck bed covers are what you should look out for if you are obviously getting a truck bed cover for your vehicle. However, there are some thin lines between these two choices that can make differences in your decision. We strongly suggest you go through this review once again if you are still not sure which one to go for!

Happy riding!

4.5/5 - (2 votes)

Filed Under: Blog

About John Coker

John Coker is a professional auto mechanic and automobile enthusiast with a BSc in mechanical engineering and years of practical expertise. He has worked at several reputable garages in the United States, which has allowed him to get additional practical experience. Currently employed as a chief mechanic at a US garage. Experienced in Automotive garages, Running boards, Cold Air Intake, Truck Bed/Tonneau cover, etc. On AutomoHub , you'll find virtually everything about automobiles from reviews to professional advice from him.
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