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Bak Revolver X4S Review

Bak Revolver X4S Review

By PattyKay Lilley

The BAK Revolver X4S, a product that has made a significant impact in the tonneau cover market, is a versatile tool worth considering for truck owners. This hard-rolling tonneau cover offers both utility and style. Fitted with advanced features such as a sleek, low-profile design, and robust construction, it ensures the security of your truck bed while enhancing the vehicle’s overall aesthetics.

Our comprehensive BAK Revolver X4S review aims to provide you with an in-depth understanding of this product’s functionality, design, and its value proposition. Equipped with this knowledge, you will be better positioned to make an informed decision when considering your next tonneau cover purchase.

Bak Revolver X4S Review – Features of This Tonneau Cover

Bak Revolver X4S Review - Features of This Tonneau Cover

The BAK Revolver X4S is grounded on a structure of interlocking aluminum slats, which are powder coated for a matte black finish. These slats are then enveloped with a tightly bonded layer of sturdy, industrial-grade vinyl.

The outcome of this intricate process is a tonneau cover that lays flat and has a unified look – a feature that is further accentuated by the flattened side seals. When locked together, the aluminum slats can endure an evenly distributed weight of up to 400 pounds.

BAK has ingeniously incorporated locks at the end of the truckbed that allow the Revolver X4S to transform into a flexible roll-up cover, providing unhindered access to the truck bed. This also enables quick and easy securing of the tonneau cover, providing a clear view out of the truck’s rear window. But the innovation doesn’t end here. BAK has also devised a patented rotational locking rail that reinforces the security of the tonneau cover.

The new BAK Revolver X4S is the third-generation model of America’s best-selling premium hard rolling cover, and it comes with several exciting features. It boasts a matte-black finish, from top to bottom, with newly designed side seals and finished rear corner caps adding a touch of refinement to your truck. This hard-rolling truck bed cover is engineered for durability in real-world conditions. Its heavy-duty slats are wrapped in industrial-grade vinyl, offering superior protection.

With the cover closed, the patented rotational locking system secures the X4S along the entire length of the bed, on both sides, contributing to unmatched strength and security. When open, the Revolver X4S smoothly rolls forward and stores tightly against the cab, secured by a robust strap and buckle system.

This design provides full access to the truck bed without obstructing your sightlines through the rearview mirror or third brake light visibility. The Revolver X4S is backed by a 5-year warranty from BAK. Expect more with the BAK Revolver X4S.

Is the BAK Revolver X4S Theftproof?

One must keep in mind that no product can be completely theftproof, only highly theft-resistant. The primary objective of any tonneau cover is to effectively conceal what is stored in your truck bed. If this fundamental task is not accomplished, the secondary aim becomes deterring potential thieves by making it difficult to gain access to your truck bed, thereby compelling them to seek out easier opportunities, such as an unguarded truck parked nearby.

The BAK Revolver X4S achieves both these goals proficiently. Its unobtrusive, low-profile design does not draw unnecessary attention. This prevents most people from investing time in guessing what might be concealed in your truck bed, a common deterrent with most truck bed covers.

However, if someone still harbors interest, they will face a formidable obstacle in the BAK Revolver X4S. While it may appear to be a soft cover, a single touch is enough to make any intruder realize they are confronting a stern barrier. The aluminum slats of the BAK Revolver X4S as hardy as the toughest truck bed covers available in the market.

This realization is often enough to make any potential thief reconsider and think, “Surely there’s an easier truck to break into somewhere around here.”

See more: Truxedo Pro X15 Review

Is the BAK Revolver X4S Watertight?

Is the BAK Revolver X4S Watertight?

Like any product, the BAK Revolver X4S is not completely waterproof. If you come across any product that claims to be fully waterproof, consider it a red flag. Even the tiniest spaces can let in water, including your truck bed. Most tonneau cover manufacturers, including BAK, do not guarantee 100% waterproofing. However, they do ensure a reasonable level of water resistance.

The crucial factor for maintaining a dry truck bed is the installation. Proper positioning and tightening during the installation process can significantly reduce the chances of a leak. Post-installation, it is a good idea to take your truck for a car wash. The high-pressure water jets can reveal if there are any leaks.

As for day-to-day use, it’s important to regularly check the fastening hardware (we recommend seasonally) of your tonneau cover. Make sure nothing has become loose over time. If you need to remove the BAK Revolver X4S and put it back, be sure to install it with the same care as you did the first time. Frequent removal and reinstallation can result in leaks, as components might not fit as perfectly as they did initially.

Lastly, if you’re dealing with equipment or cargo that absolutely cannot get wet, take extra precautions to protect it. Remember, while the BAK Revolver X4S provides a reasonable level of water resistance, there is no such thing as a completely waterproof tonneau cover.

If you encounter any issues with leaks, don’t hesitate to reach out to the BAK customer service line. They are more than willing to assist you in addressing any concerns you may have with your product.

Installing the BAK Revolver X4S on Your Truck

When it comes to installation, Bak embraces the do-it-yourself spirit so emblematic of American truck owners. You can install the BAK Revolver X4S in about an hour, possibly less if you’re well-versed with such installations.

The process begins with the bulkhead. The BAK Revolver X4S comes with two different pieces of insulation, depending on whether you have a spray-on bed protector or a drop-in.

The side rails fasten to the inside of the truck sidewall with two or three clamps, depending on the length of your bed. Indentations on the bottom of the side rail guide you on where to position them. As with most tonneau cover installations, tighten everything by hand until you ensure the final fit.

Next comes the cover, which is rolled up in the shipping container. Place the rolled cover between the side rails and position it so that the back end lines up to lock in place (but don’t lock it in place yet). Unroll the cover towards the front of the truck until it is completely extended except for the last three or four slats.

Your hardware package includes two bolts that slide into the channels created by the slats. Once in the channel, position these bolts to drop into the bracket on the side rail close to the cab. Now you can get underneath the cover and hand-tighten the rest of the connections.

Pay careful attention to the instructions and ensure you have the proper clearances on the side rails and the end caps. Once you verify this, go back and tighten everything down. The hardware kit includes molding to attach to the rolled cover to guard it against damaging the back window or cab of your truck.

A potential issue you may encounter is related to the cover being rolled up in the shipping box during warehousing and final shipping. When unrolled for installation, the seals on either side where it secures into the rotational locking rail will often be wavy and dimpled from being rolled up for so long.

This can be easily resolved by parking your truck in direct sunlight. The heat will take the waves out of the trim in a few days. Another option is to use a heat gun or hair dryer to flatten out the rubber. Both solutions work equally well.

If you still have questions about the installation of the BAK Revolver X4S, carefully read the instructions and consult the videos on the BAK website. Remember, the installation will always vary depending on the kind of truck you are installing it on.


Whether you’re considering a purchase or already own a BAK Revolver X4S, our FAQ section provides answers to some common queries. From maintenance to warranty, we’ve selected the most frequently-asked questions to make your experience seamless and informed.

How can I maintain the BAK Revolver X4S properly?

Maintaining your BAK Revolver X4S is crucial for its longevity and performance. Regularly check the fastening hardware and ensure nothing has become loose over time. Regular cleaning with a mild soap and water solution can help keep the cover looking its best. Avoid using harsh chemicals or abrasive materials that could damage the finish.

If you live in an area with harsh weather conditions, additional care may be needed. Snow and ice can put undue stress on the cover. Remove any snow or ice accumulation promptly to prevent potential damage. Remember, the cover is water-resistant, not waterproof, so ensure you take extra precautions to protect your cargo.

Is the BAK Revolver X4S compatible with my truck bed accessories?

The BAK Revolver X4S is designed to be compatible with a wide range of truck bed accessories. However, compatibility may vary based on the specific accessory and how it’s installed. For example, some bed liners may interfere with the clamping system of the cover, requiring minor modifications for a proper fit.

Before purchasing any accessory, it’s best to check its compatibility with your truck model and the BAK Revolver X4S. If you already own the accessory, you may need to adjust its installation to ensure it works with the cover. Consult the manufacturer’s instructions or contact BAK customer service for further assistance.

What do I do if I encounter a problem with my BAK Revolver X4S?

If you encounter any issues with your BAK Revolver X4S, the first course of action should be to contact BAK customer service. Their team is readily available to assist in troubleshooting any problems you may have. Whether it’s a minor adjustment or a major concern, they can guide you through the process.

For minor issues, troubleshooting over the phone or through email may suffice. However, for more significant issues, you may need to return the product for repairs or replacement under BAK’s warranty policy. Remember to have your purchase information and product details readily available when you contact customer service.

Final Thoughts

The BAK Revolver X4S presents a compelling combination of security, ease of installation, and aesthetic appeal. Its robust construction ensures durability, while its sleek, low-profile design enhances the overall look of your truck. The ease of installation and user-friendly operation make it an attractive choice for truck owners, regardless of their DIY skills.

However, remember that the cover is water-resistant, not waterproof. In regions with heavy rainfall or snow, you might need to take additional measures to protect your cargo. Also, compatibility with truck bed accessories may vary, so it’s a prudent idea to check before purchasing any add-ons.

The minor issue of wavy seals due to storage can be remedied with a little patience and some sunlight or heat. BAK’s customer service is commendable for their proactive approach in resolving any concerns, adding to the experience of owning this cover.

In conclusion, the BAK Revolver X4S stands out as a product that strikes an impressive balance between functionality and style. It’s a worthwhile investment for those looking to enhance their truck utility while also maintaining an appealing aesthetic.

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