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  1. Tonneau Cover
  2. BAK Industries
  3. Roll-Up - Hard
  4. Rack Compatible
  5. Flush Profile - Inside Bed Rails
  6. Aluminum and Vinyl
THIS ITEM IS NOT A FIT FOR
2015 Keystone Outback Terrain Travel Trailer
Special Savings on Select BAK Revolver Series Tonneau Covers.
BAK Industries

BAK Revolver X4s Hard Tonneau Cover - Roll Up - Aluminum and Vinyl - Matte Black

Part Number: BAK99ZR
In Stock
$1,379.99
Retail:$1,521.09
You Save: $141.10
Tonneau Cover
Not Confirmed to Fit

2015 Keystone Outback Terrain Travel Trailer

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Weather-resistant, roll-up cover keeps the gear in your truck bed secure and dry. Rolls up quickly by hand for full access to your truck bed. Aluminum slats keep cover tight and help prevent break in. Requires no drilling to install. Great Prices for the best tonneau cover from BAK Industries. BAK Revolver X4s Hard Tonneau Cover - Roll Up - Aluminum and Vinyl - Matte Black part number BAK99ZR can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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BAK Industries Tonneau Cover - BAK99ZR

  • Roll-Up - Hard
  • Rack Compatible
  • Flush Profile - Inside Bed Rails
  • BAK Industries
  • Aluminum and Vinyl
  • Matte
  • Tailgate Lock
  • Opens at Tailgate

Weather-resistant, roll-up cover keeps the gear in your truck bed secure and dry. Rolls up quickly by hand for full access to your truck bed. Aluminum slats keep cover tight and help prevent break in. Requires no drilling to install.


Features:

  • Roll-up, soft tonneau cover keeps the gear in your truck bed secure and dry
  • Cover rolls up for full truck bed access - secures with hook-and-loop straps and buckles
  • Pinch levers let you easily open cover from either side of truck bed
    • Cover latches shut whether tailgate is open or closed
    • Tailgate lock keeps your gear secure
  • Low-profile cover with textured, matte black finish sits 1-1/2" above the bed rails
  • Double-coated, reinforced vinyl with aluminum bows is sturdy and resists tears
    • Self-tensioning frame keeps the cover taught
  • Weather seals keep out water without need for drain tubes
    • Beveled edges direct water off the sides of cover
  • Easy, clamp-on installation inside truck bed rails - no tools or drilling required
  • Limited lifetime warranty


Specs:

  • Weight capacity: 400 lbs evenly distributed
  • Limited 5-year warranty


Get the advantages of both a hard tonneau cover and a soft tonneau cover for your vehicle with the Revolver X4s. This hybrid tonneau likely has an identity crisis. It's built like a hard cover, but it looks and acts like a soft cover. With the Revolver X4s, you get the strength, durability, and security of a hard tonneau and the sleek look and convenience of a soft, roll-up tonneau - all while protecting your truck bed and cargo and helping to improve your fuel mileage.


The X4s has the features of the original Revolver X4 with upgrades including a matte black aluminum underbody, integrated safety slat caps, rear corner caps, and an integrated bulkhead seal.


Strong, Convenient Hybrid Design

Fully installed coverPartially rolled up cover

The secret to the Revolver X4s's versatility is the aluminum slats on the underside of the cover that make it strong, seamless, and flexible. These individual, hinged slats give the cover its rugged body, while also allowing enough flexibility for the cover to be rolled up. Atop the slats is a tough, 1-piece vinyl layer that adds to the tonneau's sleek look and overall durability while also keeping the slats perfectly aligned. As a result, the Revolver X4s will roll up evenly every time, unlike ordinary soft vinyl covers that can get lopsided as you maneuver them.


Low-Profile Appearance

Cover sits flush for a low-profile appearance

Unlike other tonneau covers that sit 1/2" or more above your truck bed rails, the Revolver X4s sits nearly flush with your rails for a clean, ultra-sleek look.


Full Truck Bed Access

Cover rolled up for full truck bed access

The Revolver X4s gives you full use of your truck bed in a matter of seconds - just roll up the cover and secure it behind the cab. As a result, you can tote around all your gear without having to remove the tonneau. And because the Revolver X4s mounts inside your truck bed rails, you can still use your truck bed stake pockets to mount accessories like tie-down anchors.


Simple, One-Person Operation

Cover is closed and secure

The Revolver X4s is simple to operate. Following installation, just roll the cover out and press down on the rearmost slat at the tailgate to secure the tonneau in place. The built-in latches not only lock down the back end of the tonneau, but they also fasten the sides of the Revolver X4s along the length of the frame rails. The rail tooth runs the entire length of each frame rail. It rotates downward to lock the side rail into the sides of the cover.


Cover is latched closed

When the cover is rolled out and the rear slat is pressed down at the tailgate, the latches on both sides engage. When this happens, the integrated teeth pivot down and rest on top of each slat of the rolled-out cover. Closing the rear slat effectively pins the cover to the rails, ensuring that the cover stays closed from front to back. It's that simple - no Velcro to seal or snaps to wrestle with. When your tailgate is closed and locked, no one will be able to get through the cover, thereby safeguarding your truck bed and its contents. The cover automatically secures as the locking levers at the tailgate engage. These sturdy levers have reinforced gussets that give them added strength and durability. And they will never need adjustment.


Cover unlatched and partially unrolled

To roll up the cover, unlatch the rear slat by dropping the tailgate and pulling either of the 2 release cords located along the bottom corners of the slat's housing. Either cord will release both of the latches so that you can raise the rear slat. When the latches are disengaged, the teeth roll back into the frame rails, releasing the sides of the cover so that you can easily roll it up. Just fold the rear slat over and roll up the cover the rest of the way.


Rolled up cover secured to end of cab by buckle straps - from aboveRolled up cover secured to end of cab by buckle straps - from below

Then secure the tonneau behind the cab with built-in nylon straps and sturdy plastic buckles. These straps help to keep the bundled tonneau from contacting your cab while you drive. And 4 rubber bumpers act as cushioned barriers between the cover and your truck cab.


Heavy-Duty Construction

Heavy-duty, aluminum construction under matte black vinyl

The Revolver X4s's rugged aluminum and vinyl construction makes it an ideal match for your truck, no matter what you do while at work or play. This cover is strong enough to hold up to 400 lbs of evenly distributed weight when it's rolled out. The 1/4" thick, aircraft-grade aluminum slats are covered with a matte black vinyl skin for superior resistance to impacts, UV rays, and weather. This skin is what gives the tonneau its soft, sleek look. While the Revolver X4s may look like a soft cover, its aluminum skeleton provides exceptional security because it cannot be cut through in the same way that a standard soft vinyl cover can be.


Cover lays atop protective felt strips

Felt strips on the underside of the tonneau help to keep the slats from scuffing the vinyl top as you roll up the cover. The soft felt also shields your hands when the cover has gotten hot or cold. And rubber strips overlay your truck's side rails, cab rail, and tailgate, creating a seal that helps to conceal any gaps and works to prevent water from seeping in.


Easy, No-Drill Installation

Clamp-on installation

Installing the Revolver X4s is simple. All you need is a wrench, and you don't have to do any drilling. The tonneau's frame rails clamp to the inside of your truck bed side rails to create a base for the cover. The included bolts secure the front hinge rail to the frame rails at the cab.


Slotted brackets at the ends of the tonneau side rails allow the bolts to shift in case you need to adjust the cover to achieve a snug fit. These brackets ensure proper alignment of the tonneau frame on your truck bed side rails. This eliminates trial and error in installing your rails - you won't have to put them on and then take them off again to get the correct fit. Pre-installed shims and spacers also help to ensure that the Revolver X4s rails are installed squarely on your truck bed.



80330 BAK Revolver X4s Hard Tonneau Cover - Roll Up - Aluminum and Vinyl - Matte Black

Installation Details BAK99ZR Installation instructions

This Product Fits The Following Vehicles



California residents: click here


Ratings & Reviews

4.5

71 reviews
Weather-resistant, roll-up cover keeps the gear in your truck bed secure and dry. Rolls up quickly by hand for full access to your truck bed. Aluminum slats keep cover tight and help prevent break in. Requires no drilling to install.

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Very easy to install. Package arrived e arly.



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Install was easy, looks great!



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GREAT PRODUCT. I LOVE IT!



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Works great! No issues.



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I have been very happy with this cover. It has been secure and keeps most water out when it rains. It is holding up very well.



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East to install. Great fit, very durable and easy to operate



by:

It’s awesome. However one section toward tear of bed separates sometimes. It takes a minute and a second set of hands to reassemble. Has anyone else had this issue?



by:

Carrie’s customer service and the products. I’m gonna be a repeat customer.



by:

Perfect fit, almost completely flush with the bed, very attractive, doesn't flop going down the road. Takes up no bed space when rolled up and does not impair rear view.



by:

As advertised, looks good, had a broken trim piece when I unrolled the cover. CS was excellant. Some of the instructions are missing or confusing. Overall extremely happy with the whole transaction.



by:

Has been on my truck for a year and still looks great and doesn't leak, very pleased with this cover.



by:

Love this cover. It was a bit tricky to figure out how this works as the Honda Ridgeline requires a kit that comes with it so it'll fit. Once this step was completed, the rest of it was not too hard to figure out.



by:

Excellent value in a roll cover. If you want the look and convenience of a vinyl Tonneau cover with the security of metal then this is for you.



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Great product.
Would reccomend.


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Show More Reviews

See what our Experts say about this BAK Industries Tonneau Cover

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    For your 2022 Ford F-250 the BAK Revolver X4s Hard Tonneau Cover # BAK99ZR you mention is a confirmed fit. The Base Rails for Thule TracRac SR Sliding Truck Bed Ladder Racks # TH21785 is also compatible with your vehicle
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  • Ladder Rack Compatible with Thule Hullavator Pro for Heavy Kayaks
    Thank you for all of the info! I do have a solution for you but it working really relies on if the rails of the tonneau cover you have for your 2020 Ford F-350 short bed mount inside the bed rails or on top of them. If they mount inside the bed rails then you can use the Thule TracRac SR # TH43003XT-785. If they mount on top of the bed rails then we will need to find you a different tonneau cover as your cover isn't compatible with any ladder rack. The Thule Hullavator Pro # TH898 will...
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  • Can BAK Revolver X4s Hard Tonneau Cover Be Secured When Partially Open?
    Hello Dan, thanks for reaching out, and good question. The BAK Revolver X4s Hard Tonneau Cover # BAK99ZR can only be secured in the fully open or fully closed position. It has buckle straps that secure the cover when it is rolled up behind the cab. Each panel kind of snaps into the rail, but there would be nothing holding it in place when partially open.
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  • What is the Difference Between the BAK X2 and X4 Tonneau Cover for My 2025 Ford F-250?
    Hello Makr, Congrats on the 2025 F-250! The BAK Revolver X2 # BAK39330 and the X4s # BAK99ZR are hard roll-up truck bed covers that look similar at first glance, but the X4s is essentially an upgraded version of the X2, with a few extra touches that make it feel more refined and modern. One of the biggest differences you’ll notice right away is the finish. The X2 has a glossy black vinyl top with exposed silver aluminum slats underneath. When it's rolled up, those silver slats show...
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  • Wet Bolts for 2019 Jayco White Hawk 27RB
    Hi Beth; do you want a whole wet bolt kit? If you don't already have heavy duty shackle straps as well I recommend the MORryde Suspension Upgrade Kit for Tandem Axle Trailers. Upgrading the bolts, shackle straps, and bushings will make sure those components last so you don't end up stranded over a simple parts failure. The correct kit will depend on the length of your current shackles, which is something you will have to measure. If they're 2-1/4" center hole to center hole you need #...
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  • Recommended Cover for a 2026 Ford F-350 w/a Short Bed Pulling a Gooseneck/5th Wheel Trailer
    Hey Mike, congrats on the new truck. The only problem I repeatedly see with covers like the BAK Revolver X4s Hard Tonneau Cover item # BAK99ZR is those straps that hold the cover open tend to wear out. The more you drive around with the cover rolled up the quicker they wear out and they can be difficult to track down replacements for. Replacement parts for this style cover aren't the easiest to track down either. If you're upgrading trucks every few years you should be good though. The...
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  • Best Tonneau Cover for a 2022 Ford F-250/F-350 for 5th Wheel Towing
    The BAK Revolver X4s Hard Tonneau Cover is a great option for trucks with fifth wheel hitches as you can secure the cover at the cab when towing, the cover sits flush to the bed so there won't be clearance issues with the hitch when closed, and it has a hard shell so it will provide security with the tailgate shut and locked. It also rolls up like a soft cover for ease of use. The correct one is part # BAK99ZR for 6-3/4' beds or part # BAK49ZR for 8' beds.
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  • 2024 Ford F-350 Super Duty Tonneau Cover Recommendation for Towing a Brinkley Z2900
    Thanks for reaching out, Lise! I've narrowed down our 2024 Ford F-350 Super Duty tonneau cover options to 3 because they each have something a little different to offer both in function and when it comes to pricing: The BAK Revolver X4s Hard Tonneau Cover # BAK99ZR is our "Good" option which is still an excellent cover that combines the sleek look of a soft cover with the security and durability of a hard cover. For the "Better" category we have the RetraxPRO XR # RTT-80383 which is...
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  • How Much Space Does BAK Revolver X4s Take up at Front of Truck
    The BAK Revolver X4s Hard Tonneau Cover, short bed # BAK99ZR or long bed # BAK49ZR, measures about 8" when rolled up. It doesn't roll up completely up to the front so it will probably hang over the bed about 9" or 10" so you'll want to take that into account with your toolbox. Please note that it your toolbox spans the entire width of your truck bed then you may have trouble opening it with any tonneau cover installed due to the rails that will be sitting inside the bed rails. You may...
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  • BAK Revolver X4s and Thule TracRac SR Kits That Fit a 2020 Ford F-250 with 6-1/2 Bed
    You can definitely install the BAK Revolver X4s # BAK99ZR with the Thule TracRac SR # TH43003XT-785 on your 2020 Ford F-250 Super Duty. It's actually one of my favorite combinations for a pickup simply because it opens up the door to a large variety of ways to use the truck bed.
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  • Will a Folding Tonneau Cover Obstruct a 3rd Brake Light Mounted Backup Camera
    I have a solution for you and can give you a general idea, but this isn't something that is tested for because of the differences between tonneaus, trucks and 5th wheel hitch placements. Generally speaking, most tri-fold covers are going to fold over on top of the panel closest to the cab and lay flat without any obstruction to your 3rd brake light; the Lomax Hard Tonneau Cover - Folding - Aluminum - Matte Black # AB1010049 is a good example of this. However, the issue is when you start...
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  • Recommended BAK Revolver X4s Hard Tonneau Cover for a 2023 Ford F-250 w/ a 6-3/4 Foot Bed
    They redesigned the bed for the 2023 Ford F-250's so I can't say with 100% certainty that the Thule Trak Rac Sr from your 2014 F-250 will fit but it should depending on which model you have. The length hasn't changed and the crossbars are adjustable along the uprights. The main concern is the 2014 was two generations ago now so you may need to upgrade your base. For the tonneau cover, you are going to want the BAK Revolver X4s Hard Tonneau Cover item # BAK99ZR. This cover is confirmed...
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  • Tonneau Cover For 2019 Ford F-250 Super Duty Short Bed To Use With Thule TracRac SR
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  • Ladder Rack and Tonneau Cover Recommendation for a 2019 Ford F-250 Short Bed
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  • Can BAK Revolver Tonneau Cover Fit Ford F-250 with TracRac SR Ladder Rack
    Yes, the BAK Revolver X4s is actually the only tonneau cover that fits your 2023 Ford F-250 with the Thule TracRac you have because it rolls up narrower than the base rails of the ladder rack. So if you have a long bed truck you would want the part # BAK49ZR or if you have a short bed truck # BAK99ZR. You should be able to install the cover with the ladder rack installed but it would be easier if you removed it.
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  • Bak Tonneau Cover that Can Fit 2019 Ford F-250 Short Bed with TracRac Sliding Ladder Rack
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  • Recommended Tonneau Cover For A 2022 Ford F-350 With A Thule TracRac SR Ladder Rack
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  • Tonneau Cover that Can Fit Ford F-250 6-3/4 ft Bed with Thule TracRac Ladder Rack
    The Bak Revolver tonneau covers can fit with the Thule Tracrac SR sliding ladder racks like you mentioned having. You didn't mention the year of your Ford F-250 but you did reference a tonneau that fits 2017 to 2020 year trucks so based on that you most likely would need the Revolver part # BAK99ZR which fits the year range of 2017-2022 Ford F-250 models with a 6-3/4 foot bed.
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  • Recommended Ladder Rack For 2022 Ford F-250 With BAK Revolver X4s Tonneau Cover
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  • Tonneau Cover that Works with TracRac Sliding Ladder Rack on a 2018 Ford F-350 Short Bed
    There is a Tonneau cover that is compatible with the TracRac SR sliding ladder rack # TH43003XT-785 for your 2018 Ford F-350 short bed. It is the BAK Revolver # BAK99ZR. This cover is unique in that it mounts between the bed rails, rolls up, and is still a hard cover with a vinyl skin. I have linked a video review of this cover for you.
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  • Recommended Tonneau Cover For 2022 Ford F-250 Short Bed That Is Compatible With Thule TracRac SR
    For your 2022 Ford F-250 with the 6-3/4' bed I recommend going with the BAK Revolver X4s Hard Tonneau Cover # BAK99ZR. This cover installs inside of the bed rails so it will work perfectly with the Thule TracRac SR Sliding Ladder Rack # TH43003XT-785 you were wanting. The Revolver is a heavy duty cover capable of supporting 400lbs if the load is evenly distributed, rolls up all of the way to allowing you full access to the bed of your truck, and with the cover closed the 1/4" thick aluminum...
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  • Recommended Tonneau Cover to Fit with Thule TracRac SR on Short Bed 2017 Ford F-350
    I recommend using the BAK Revolver with the Thule TracRac SR # TH43003XT-785 on your short bed 2017 Ford F-350 because it combines the sleek look of a soft cover with the durability and security of a hard tonneau cover. The Revolver comes in a gloss finish the the X2 # BAK39330 or a matte black finish with the X4s # BAK99ZR. This cover is a great choice with the SR because you can open and close the cover without having to adjust where the uprights are in your truck bed so it eliminates...
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  • Which Thule TracRac SR Ladder Rack with Extension Fits 2017 Ford F-250 Short Bed
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Info for this part was:

Employee Jameson C
Expert Research:
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Video Edited:
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Employee Wilson B
Updated by:
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Employee Matthew S
Written by:
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