BAK Revolver X4s Review

The BAK Revolver X4S is an upgrade from the BAK Revolver X4. It’s a hard rolling cover crafted with aluminum slats covered in vinyl. This combination not only gives it a sleek appearance but also ensures it can handle a significant amount of weight.

BAK Revolver X4s hard rolling tonneau cover
BAK Revolver X4s Tonneau cover

It features pivot teeth latching for smooth and easy operation. Designed to resist dirt and UV rays, it keeps looking fresh while protecting your truck bed.

Considered America’s number one hard roll-up cover, it’s a premium quality product.

But is it the best for your needs? You’re about to find out. Stay tuned!

Key Points

Based on my experience, I found out some strengths and weaknesses of BAK Revolver X4s


  • Great water resistance
  • Pivot teeth for smooth operation
  • Full bed access
  • High weight-bearing capacity
  • Low-profile design
  • 5-year Limited warranty


  • Heavy weight
  • Freezes in Cold climate
  • Vinyl top is prone to scratches


  1. 1999-23 Ford F250 / F350 Super Duty
  2. 2004-23 Ford F150
  3. 2010-21 Toyota Tundra
  4. 2004-23 GM Silverado, Sierra
  5. 2009-23 Dodge Ram
  6. 2015-22 GMC Colorado, Canyon

Let’s jump into the specs.

SpecificationBAK Revolver X4s
Cover TypeHard Roll-up
FinishMatte Black Finish
Panel CoreAluminum Slats
Frame MaterialAluminum
Panel ExteriorVinyl Coating
Seal MaterialEPDM Rubber
Weather ResistanceWater-Resistant
SecuritySecure Pivot Locks
Weight CapacityUp to 400 lbs (Evenly Distributed)
Cover WeightApproximately 85 lbs
Bed AccessFull Bed Access
Warranty5 Years
BAK Revolver X4s Specs


BAK Revolver X4s after installation
BAK Revolver X4s installed

BAK Revolver X4s tonneau cover as an upgrade from the X4, is definitely a level up!

First things first, this cover isn’t light. It weighs about 84 pounds. That weight is all in solid construction.

Composed of durable aluminum slats, each one 1/4 inch thick and all wrapped up in a vinyl layer. So, it’s not just tough, it’s reliable too.

X4s uses pivot teeth instead of Velcro for locking the rails and cover together securely. No more Velcro, no more fuss.

Style-wise, the X4s has got this slick, all-black vibe going on, from top to bottom. Even the rubber ties and straps that keep the cover rolled up are in black.

When you roll it up fully, you’ve got a compact roll of about 10.5 inches in diameter. That doesn’t block your rear view.

Fit-wise, it sits nice and flush with your truck bed, just about half an inch above the bed rails. It only shows a minimal 1/8th inch, so there’s plenty of room underneath for your 5th wheel or anything else you need to carry.

BAK Revolver X4s, which is known for its durable construction, uses pivot teeth for a smooth opening and closing mechanism, and does not block the rear view when rolled up.

How To Install BAK Revolver X4s?

One of the best things about the X4s is that you don’t have to be a pro to install it. It comes with a no-drill, clamp-on design, meaning it’s pretty easy to set up on your truck bed.

All you’ll need is a few standard tools, like a wrench and a socket set, and you’re good to go.

You’ll start by aligning the cover’s rails on the bed rails of your truck. Once you’ve got them in the right position, you use the clamps provided to secure them.

Keep in mind that you’ll want these to be pretty snug, but don’t go overboard and over-tighten them.

Next up, you roll out the cover across the length of your truck bed. It should sit flush against the rails. Then you just close the tailgate, push down on the end of the cover, and you’ll hear the pivot teeth click into place.

The last step is to install the straps. They’re used to keep the cover rolled up when you need full access to your truck bed. Once they’re secured, you’re all set!

One last thing to note, the installation instructions that come with the X4s are pretty clear and straightforward. But if you’re feeling unsure, you can always check out some online tutorials or ask a buddy to lend a hand.

Usage and Weather Performance

BAK Revolver X4s from outside
BAK Revolver X4s top

BAK Revolver X4s has made some improvements over its previous model, the X4.

Water resistance has improved significantly compared to previous model.

X4s’ pivot teeth mechanism pins the rails and the cover together. And there’s a seal on tailgate, which does a wonderful job in keeping the water out.

But remember, during high pressure car washes water always seem to find its way in. It won’t fill the truck bed with water, you’ll just see some moisture inside the truck bed from cabin side and little bit on tailgate.

Pro Tip: Keep the luggage in the middle before a car wash, it will stay dry.

But why tonneau covers leak at first place? This is what I’ve figured, click to read my dedicated post on it here

Always check the seals and ensure everything is properly aligned when you close the cover or when you are about to hit the road.

Now, about UV rays and corrosion defense X4s is made up of 1/4-inch thick aluminum slats, which are then coated with a vinyl layer on top.

This combination of materials helps protect the cover from the harmful effects of UV rays and corrosion. So, you can expect it to hold up well under the scorching sun without fading or buckling.

But, and this is something to keep in mind, the vinyl layer is a bit more prone to scratches compared to some other covers.

So, if you want to keep it in perfect shape, you might want to take some precautions to avoid any unwanted scratches. Also, there are tons of tonneau cover sprays for vinyl and leather surfaces in the market which you can use to keep it neat.

BAK Revolver X4s from inside
Inside view of BAK Revolver X4s

When the cover is fully rolled up, it has a diameter of about 10.5 inches. It doesn’t block your rear view, which is definitely a plus in terms of safety.

Now, I have to mention an issue I’ve encountered with this cover. If you live in the North, you may want to consider this aspect.

During a recent visit to a colder region, I faced a freezing problem with the cover. It simply wouldn’t roll up smoothly, because it wasn’t bending properly at the creases.

As a result, I had to manually lift the cover to access my cargo. It’s definitely something to think about if you reside in colder climates or frequently experience freezing temperatures.

So, it’s important to consider the specific weather conditions in your area when choosing a truck bed cover, to ensure it can withstand the challenges of your environment.

Overall, the BAK Revolver X4s is effective at keeping the bed safe and clean. However, it tends to freeze in cold temperatures, making it unsuitable for people living in colder areas

Is BAK Revolver X4s Secure?

The BAK Revolver X4s features locking rails, which are a part of its security mechanism. They work in harmony with the cover, providing an extra layer of protection against unauthorized access.

So, when you close the cover, these rotational locking rails come into action, securing it firmly in place. It’s like a double-check to make sure your truck bed stays off-limits to any curious hands.

And yes, as you rightly pointed out, the cover also boasts those pivot teeth we discussed earlier. These pivot teeth play a crucial role in pinning the rails and the cover together, ensuring added security.

With both the rotational locking rails and pivot teeth working hand in hand, you can have peace of mind knowing that your cargo is well-protected and safe from any prying eyes.

One thing you should keep in mind is that nothing is 100% safe. So, you must keep checking if the rails and latches are properly locked.

I would not recommend keeping your valuables in the truckbed for a longer period of time if the truck is parked at an unsafe place.

Is BAK Revolver X4s Worth the Money?

With a price tag that hovers between $1,199 and $1,249, you might be wondering if it’s worth it. I mean, that’s a good chunk of change, right?

But here’s the thing. X4s comes with a solid 5-year warranty that takes a load off your shoulders. Also the built quality is outstanding. It’s a BAK cover and they stand behind their product.

Plus, it features locking rails and pivot teeth, which secure your belongings better than Velcro options and are easy to use. Additionally, it keeps the cover watertight.

All these factors combined make it a premium quality cover. Therefore, the price is justifiable; after all, you get what you pay for.


So there you have it, a detailed look into the BAK Revolver X4s tonneau cover. With its sturdy design, excellent security features, and reliable weather resistance, it sure packs a punch in terms of functionality.

Sure, there might be a couple of drawbacks, such as its vulnerability to scratches and freezing in extreme cold. But do keep in mind, if you live in the north or may visit colder regions, the cover can freeze.

It’s not a deal-breaker for those who temporarily go to areas with low temperatures, but something you should be aware of.

And with a robust 5-year warranty and the peace of mind, it brings, it’s hard to overlook this tonneau cover.

Quality wise it is a premium cover and good value to the money. All things considered, it’s definitely a worthwhile investment for your truck.