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Updated on Jul 7, 2025
BAK Industries® is a leader in truck bed cover innovation and production. The industry-leading brand—renowned for its high-quality products, cutting-edge design elements, and outstanding customer service—manufactures multiple truck bed cover models, ranging from hard-folding designs to intuitive roll-up covers. Which is best for you?
In this feature, we’re pinning two of BAK’s most popular tonneau covers—the BAKFlip MX4 and Revolver X4s—against one another to determine which design and price tag best suits your needs. If you’re in the market for a new truck bed cover and are considering one from RealTruck’s own BAK Industries, stay tuned for this comprehensive tonneau cover comparison.
Though the same manufacturer engineers both bed covers, they deliver drastically different aesthetics and designs. Check out the table below for an overview of some of these key differences at a glance.
Regarding materials and construction, both tonneau covers offer supreme build quality. However, while the X4s has been relatively unchanged in its current generation, the MX4 has just undergone its most impressive generation update to date.
The third-generation BAKFlip MX4 is equipped with numerous updates that enhance functionality and durability. Some of these updates include re-engineered, high-density polymer-reinforced aluminum top panels, redesigned latching panels for 55 percent more security, and improved perimeter seals and corner caps for added durability and weather resistance.
While not an all-new design, the Revolver X4s is packed with innovative features and design elements that make it a top contender. The heavy-duty aluminum slat construction provides a puncture- and cut-resistant top, while the vulcanized marine-grade vinyl lends it a sleek and stylish appearance.
Both tonneau covers are built to last. However, it’s worth noting that the MX4 is the only of the two tonneau covers that’s made in the USA using globally sourced materials.
From an aesthetic standpoint, both the BAKFlip MX4 and Revolver X4s are sleek and stylish. With ultra-low profiles and black finishes, both bed covers sit essentially flush with the bed rails and will practically disappear into your truck’s bed for subtle styling.
One notable aesthetic benefit of the Revolver X4s over the BAKFlip MX4 is the lack of visible joints and hinges. While the BAKFlip features two obvious joints between the three separate top panels, the Revolver X4s features a sleek, seamless top due to its one-piece vinyl top cover.
However, if you have a preference for stealthy, low-profile styling, you can expect to be satisfied with the design of both the BAKFlip MX4 and Revolver X4s.
Both the BAKFlip MX4 and the Revolver X4s are engineered with the user in mind, making for two intuitive and easy-to-use bed covers. That being said, both tonneau covers operate differently—let’s cover some of the key differences.
The BAKFlip MX4 is a hard-folding tonneau cover, meaning it comprises several panels bonded together by hinges. To operate the cover, release the rear latches and fold the cover onto itself toward the bulkhead for ⅔ bed access. If total bed access is required, the cover can be folded vertically against the can and supported by integrated prop rods.
Alternatively, the Revolver X4s features a hard roll-up design, which functions similarly to conventional soft roll-up bed covers. After releasing the rear latch, the cover can be rolled toward the bulkhead to expose virtually the entire bed. The cover can then be secured in the open position with integrated straps, allowing you to drive with oversized cargo in the bed.
Aside from usability, both tonneau covers also feature simple bolt-on installations. That means no modifications, no drilling, and no permanent damage should you decide to remove the bed cover at a later date. While both tonneau covers are easy to install, it’s worth noting that the redesigned MX4 features an all-new click-in mounting system, cutting installation time by an average of 12 percent.
Lastly, let’s talk about warranty and support. Both tonneau covers, manufactured under the BAK brand label, are RealTruck products. That means that both bed covers are backed by not only BAK’s industry-leading warranty but also RealTruck’s exceptional customer support and service. Should you have an issue with your BAK tonneau cover order, RealTruck’s dedicated service staff is available to handle it.
Both the BAKFlip MX4 and Revolver X4s tonneau covers are also backed by the same 5-year warranty, providing peace of mind in your purchase.
Between the BAK Revolver X4s and the BAKFlip MX4, which tonneau cover is best?
While it may seem like a cop-out, neither tonneau cover is necessarily superior to the other. Both feature exceptional build quality, straightforward installations, simple operation, and 5-year warranties. That being said, if you’re looking to outfit your truck with the latest and greatest truck bed cover technology that BAK Industries has to offer, the BAKFlip MX4 is the obvious choice due to the recent release of the all-new Gen 3 tonneau cover.
If you have any additional questions about either bed cover, don’t hesitate to contact our knowledgeable sales staff.
Still craving more? Check out our additional tonneau cover resources on RealTruck to learn more about the popular truck bed accessories.
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