# BAK Revolver X4s Review (2026): Pros, Cons & Price > BAK Revolver X4s review: hard roll-up tonneau cover, aluminum slats + vinyl, locks with tailgate. Truck fitments, specs, pros, cons and our 8.1/10 verdict. - Source: https://truckcoverguide.com/tonneau-covers/bak-revolver-x4s/ - Markdown version: https://truckcoverguide.com/tonneau-covers/bak-revolver-x4s.md - Last updated: 2026-11-12 --- - [Home](https://truckcoverguide.com/) - [Compare covers](https://truckcoverguide.com/tonneau-covers/) - BAK Revolver X4s Hard Roll-Up Tonneau Cover 8.1 ![BAK Revolver X4s Hard Roll-Up Tonneau Cover](https://truckcoverguide.com/_astro/bak-revolver-x4s.D1QA9SHs_1eqlcS.webp) BAK · Premium # BAK Revolver X4s Hard Roll-Up Tonneau Cover Review Owners who want hard-cover security and slash resistance with roll-up convenience and no canister eating the bed floor. - Hard roll-up - Aluminum slats + vinyl - 100% bed access - Locks with tailgate - 400 lb rated $$$$ Premium Price tier: Premium price tier for the F-150 5.5 ft listing · see Amazon for today's price [Check price on Amazon](https://www.amazon.com/dp/B08WJSTCHZ?tag=truckcoverguide.com-20)[See alternatives](#alternatives) Opens Amazon in a new tab. By [Truck Cover Guide Editorial Team](https://truckcoverguide.com/about/) · Updated November 12, 2026 · [How we score](https://truckcoverguide.com/how-we-research/) We haven't tested this cover ourselves. Our score comes from maker specs, independent tests (credited by name) and owner reports, and it isn't a hands-on lab test. ## The verdict The Revolver X4s is the best answer for owners torn between a hard folder and a retractable: aluminum slats give it hard-cover strength and slash resistance, it rolls up out of the way, and unlike a retractable there's no canister bolted to the bed floor. Car and Driver tested one and rated it its best hard roll-up, finding only a little water inside after its water test. It's expensive and fiddly to fit, so take your time with the install. ### What we like - Interlocking aluminum slats resist slashing and prying (maker claim) with a 400 lb load rating - Rolls up for full bed access without a floor-mounted canister, so the floor stays clear - Car and Driver's hands-on test found it close to weatherproof and free of flapping when closed - 5-year warranty; X4ts version adds T-slots for racks ### Watch out for - About $1,500 for the F-150 5.5 ft bed - Car and Driver's install took about 1.5 hours with a lot of fitment adjustment - The rolled drum noticeably blocked rear visibility on Car and Driver's Maverick - Owners on etrailer report stiff rolling in cold, wet weather ## Score breakdown Security & build 8.5 Weather sealing 8.5 Bed access & usability 8.5 Value 6.5 Hard roll-up · Aluminum slats + vinyl · Level 2: hard, tailgate-locked ## BAK Revolver X4s specs | Brand | BAK | | --- | --- | | Cover type | Hard roll-up: Hard roll-up; aluminum slats under vinyl roll into a drum at the cab | | Material | Aluminum slats under TriShield 70-grade vinyl | | Lock | Locks with tailgate. Closing the rear slat locks it to both rails with automatic slam latches; releases are inside the tailgate, so it's secured by your tailgate lock. | | Security level | Level 2: hard, tailgate-locked (our grouping) | | Bed access | 100% bed access. BAK claims 100% bed access with the cover rolled up; the rolled drum sits at the cab end (Car and Driver found it hurt rear visibility on a short-bed Maverick). | | Drive with it open | Yes | | Install | No drilling; clamp-on rails. BAK claims 10 minutes; Car and Driver's install took about 1.5 hours with fitment adjustment. | | Load rating | 400 lb evenly distributed (maker claim) | | Weight | 97 lb (listing or retailer figure) | | Profile | Low profile, at or near the bed rails | | Weather sealing | Flush side seals and beveled edges shed water without drain tubes (maker claim). Car and Driver's water test: 'not completely weatherproof, but it's close.' | | Bed racks | etrailer says the Thule TracRac SR works (with possible slight rubbing at the uprights); BAK's Revolver X4ts version adds T-slot rails for racks. Not compatible with the Yakima OverHaul HD. | | Warranty | 5 yr | | Made in | USA (per etrailer) | | Fitment we checked | 2021–2027 Ford F-150 5'7" bed (67.1"), incl. Raptor and Lightning (part 80339) | | Price tier | $$$ Premium ($900–$1,600), about $1,499.99 for this fitment when checked. See Amazon for today's price. | - BAK advertises 'Level-3' security. That's the maker's own scale; on our three-level scale it's level 2 because the releases sit behind the tailgate and there's no key. - Weight (97 lb) is an etrailer staff answer for the 2022 F-150 5.5 ft cover, not a published maker spec. - Car and Driver tested it on a 2024 Ford Maverick, whose short bed makes the rolled drum more intrusive than on a full-size truck. ### Fitments we checked Each truck and bed is a separate Amazon listing. Prices are what Amazon showed on November 12, 2026, not live. Always confirm with the listing's fitment tool before you buy. | Truck and bed | Notes | Price | | --- | --- | --- | | Ford F-150 2021–2027, 5'7" bed | Part 80339 (our representative listing)**About $1,499.99 when checked | [Check price](https://www.amazon.com/dp/B08WJSTCHZ?tag=truckcoverguide.com-20) | | Ford F-150 2021–2027, 6'7" bed | Part 80337**About $1,579.99 when checked | [Check price](https://www.amazon.com/dp/B08WJS5B36?tag=truckcoverguide.com-20) | | Ram 1500 2019–2027, 5'7" bed | Part 80227 (RamBox version: 80227RB)**About $1,479.99 when checked | [Check price](https://www.amazon.com/dp/B08Y8FKBX7?tag=truckcoverguide.com-20) | | Ram 1500 2019–2027, 6'4" bed | Part 80223**About $1,479.99 when checked | [Check price](https://www.amazon.com/dp/B08YFMJFHW?tag=truckcoverguide.com-20) | | Silverado/Sierra 1500 2019–2027, 6'7" bed | Part 80131; works with MultiPro/Flex tailgates**About $1,479.99 when checked | [Check price](https://www.amazon.com/dp/B08ZDNHDBZ?tag=truckcoverguide.com-20) | | Toyota Tacoma 2024–2027, 5' bed | Part 80446**About $1,479.99 when checked | [Check price](https://www.amazon.com/dp/B0D4G5QH5W?tag=truckcoverguide.com-20) | | Toyota Tacoma 2016–2023, 5'1" bed | Part 80426**About $1,479.99 when checked | [Check price](https://www.amazon.com/dp/B08YFQ6B2L?tag=truckcoverguide.com-20) | | Toyota Tundra 2022–2027, 5'7" bed | Part 80440**About $1,479.99 when checked | [Check price](https://www.amazon.com/dp/B09V1T6ZQ1?tag=truckcoverguide.com-20) | | Ford Ranger 2024–2025, 5' bed | Part 80342**About $1,579.99 when checked | [Check price](https://www.amazon.com/dp/B0D45S6R9Z?tag=truckcoverguide.com-20) | | Colorado/Canyon 2023–2027, 5'2" bed | Part 80146**About $1,399.99 when checked | [Check price](https://www.amazon.com/dp/B0BS1TXTQP?tag=truckcoverguide.com-20) | Specs are compiled from maker copy on Amazon and at the retailer etrailer, plus independent tests, and may change between production runs. Not sure of your bed? Use the [bed size finder](https://truckcoverguide.com/tools/bed-size-finder/). ## BAK Revolver X4s Hard Roll-Up Tonneau Cover video review [![](https://i.ytimg.com/vi/kNJT7NEOq1k/hqdefault.jpg)](https://www.youtube.com/watch?v=kNJT7NEOq1k) Video by Adventure Rocks on YouTube. Independent creator content, shown as a reference. It is not part of our scoring. The BAK Revolver X4s is a hard roll-up tonneau cover: interlocking aluminum slats under heavy vinyl that roll into a drum at the cab. It’s the cover for owners who want hard-cover strength without folding panels or a retractable’s floor canister. The 2021–2027 Ford F-150 5’7” listing (part 80339) was $1,499.99 on Amazon on November 12, 2026, and the fitments we checked ranged from $1,399.99 (Colorado/Canyon) to $1,649.99. We haven’t tested it ourselves. It is, though, one of the few covers with an independent hands-on test: Car and Driver installed one on its long-term 2024 Ford Maverick and named it its best hard roll-up. Find your bed in the [bed size finder](https://truckcoverguide.com/tools/bed-size-finder/), and see the [best tonneau covers of 2026](https://truckcoverguide.com/posts/best-tonneau-covers-2026/) for where it ranks. ## Who the X4s is for (and who should skip it) It’s for owners torn between a hard folder and a retractable. The aluminum slats give it the rigidity and slash resistance of a hard cover, and it rolls up out of the way like a soft cover. Unlike a retractable, there’s no canister bolted to the bed floor. Skip it if you want the cheapest route to a hard cover; the [Gator EFX](https://truckcoverguide.com/tonneau-covers/gator-efx/) costs about a third as much. Skip it if you need a key: its releases sit inside the tailgate, so it relies on your tailgate lock. A [RetraxPRO MX](https://truckcoverguide.com/tonneau-covers/retraxpro-mx/) has its own key. ## Security and locking BAK calls the slats slash-resistant and says closing the rear slat locks it to both rails with automatic latches, which resist prying. BAK markets this as “Level-3” security on its own scale. On ours it’s level 2, because the release levers are behind the tailgate and there’s no key. In practice it’s harder to defeat than a soft or thin-panel cover, but lock the tailgate. ## Access and everyday use Pull the release, and BAK’s PrecisionRoll design rolls the cover to the cab, where it straps for driving. BAK claims 100% bed access. The floor stays clear, but the rolled drum takes some space at the front for tall cargo. Our [bed access calculator](https://truckcoverguide.com/tools/bed-access-calculator/) allows about 14 in, which is our estimate because BAK doesn’t publish the roll diameter. Car and Driver found the release cord takes a decent yank, then the cover rolls up seamlessly. Closed, it looked clean and didn’t flap in the wind. It can also be closed with the tailgate up. ## Weather sealing BAK claims its one-piece TriShield vinyl and flush side seals are the most leakproof design among folding, roll-up and retractable covers, with no drain tubes needed. Car and Driver’s verdict was more measured: “the cover isn’t completely weatherproof, but it’s close,” with only a small amount of water in the bed and along the edges. ## Install No drilling: the rails clamp on. BAK advertises 10 minutes. Car and Driver’s took about 1.5 hours. The knobs were stiff, the seal backing was hard to peel, and the fit needed a lot of adjustment. It can be done solo but is easier with two people. Owners on etrailer report about 45 minutes. Budget an afternoon and see our [install guide](https://truckcoverguide.com/posts/how-to-install-a-tonneau-cover/). ## Fitment notes We checked listings for the 2021–2027 F-150 (5’7” and 6’7”), the 2019–2027 Ram 1500 (5’7” and 6’4”), the 2019–2027 Silverado/Sierra 1500 6’7”, the Tacoma (2016–2023 5’1” and 2024–2027 5’), the 2022–2027 Tundra 5’7”, the 2024–2025 Ranger 5’ and the 2023–2027 Colorado/Canyon 5’2”. Things to check: - **Ram:** RamBox trucks need part 80227RB. - **Silverado/Sierra:** the standard-bed part works with MultiPro/Flex tailgates; a separate part covers CarbonPro beds. - **Car and Driver’s test truck** was a Maverick, whose short bed makes the rolled drum more intrusive than on a full-size truck. ## What you’ll need beyond the box - **Vinyl care:** [303 Aerospace Protectant](https://www.amazon.com/dp/B00JG3OIFU?tag=truckcoverguide.com-20) and [303 Tonneau Cleaner](https://www.amazon.com/dp/B0185PU376?tag=truckcoverguide.com-20) for the vinyl top. - **A bed rack:** etrailer says the [Thule TracRac SR](https://www.amazon.com/dp/B0899M9KJH?tag=truckcoverguide.com-20) works with possible slight rubbing at the uprights. The X4ts version adds T-slots. etrailer says the Yakima OverHaul HD isn’t compatible. See [covers with a bed rack](https://truckcoverguide.com/posts/tonneau-cover-with-bed-rack/). - **A bed mat**, such as the [Husky mat](https://www.amazon.com/dp/B084J67MZR?tag=truckcoverguide.com-20) for the F-150 5.5 ft bed. ## Reliability and warranty BAK gives a 5-year warranty and etrailer lists it as made in the USA. Owners on etrailer report the rails and roll stiffening in cold, wet weather, a glued liner peeling, and one cover sliding forward over time. etrailer staff put the F-150 5.5 ft cover at 97 lb. ## Bottom line The X4s is the best answer we’ve found for hard-cover security with roll-up convenience, and Car and Driver’s test backs up its sealing and everyday feel. It’s expensive and fussy to fit, and rolled up it can cost some rear visibility. If that’s acceptable, it’s one of the best covers you can buy. [Check the X4s price](https://www.amazon.com/dp/B08WJSTCHZ?tag=truckcoverguide.com-20), or read [BAKFlip MX4 vs Revolver X4s](https://truckcoverguide.com/posts/bakflip-mx4-vs-revolver-x4s/). Ready to buy? · 8.1/10 BAK Revolver X4s Hard Roll-Up Tonneau Cover $$$$ Premium Price tier: Premium · Hard roll-up · F-150 5.5 ft [Check price on Amazon](https://www.amazon.com/dp/B08WJSTCHZ?tag=truckcoverguide.com-20) ## Accessories that pair with the BAK Revolver X4s Cover care, bed racks, mats and cargo gear sold on Amazon. Most bed and floor products are vehicle-specific: the fitment shown is the listing we checked, so search the same product for your truck if yours differs. - Bed rack**RealTruck Elevate FS Base Rack (1119034)**From RealTruckA low bed rack that leaves the cover working underneath. Rated 750 lb static, 500 lb on-road and 250 lb off-road per the listing, with T-slots for bikes, kayaks and rooftop tents. Per the listing, it fits RealTruck T-slot-equipped covers (such as BAK's TS versions) and most inside-mount soft roll-ups. Standard non-TS hard covers need T-slot rails. Check RealTruck's fit guide for your exact cover.[Check price](https://www.amazon.com/dp/B0G278BLWJ?tag=truckcoverguide.com-20) - Cover care**303 Aerospace Protectant, 16 oz**Compatible, third-partyA UV protectant for vinyl, plastic and rubber that helps stop sun fading and cracking on vinyl covers and rubber seals. Check your cover maker's care instructions first; some makers specify their own cleaners.[Check price](https://www.amazon.com/dp/B00JG3OIFU?tag=truckcoverguide.com-20) - Cover care**303 Tonneau & Convertible Top Cleaner, 16 oz**Compatible, third-partyA rinse-clean cleaner for vinyl and fabric tops. Clean the cover before you apply a protectant.[Check price](https://www.amazon.com/dp/B0185PU376?tag=truckcoverguide.com-20) - Bed rack**Yakima OverHaul HD adjustable truck bed rack (8001151)**Works with any coverHeight-adjustable towers with T-slots and SKS locks, rated 500 lb on-road and 300 lb off-road per the listing, for rooftop tents, ladders and boats. The Amazon listing doesn't state tonneau-cover compatibility. Check Yakima's fit guide for your truck and cover before buying.[Check price](https://www.amazon.com/dp/B07MDSP8T8?tag=truckcoverguide.com-20) - Cargo management**Keeper ratcheting cargo bar, 40–70 in (05059)**Works with any coverPins groceries and gear against the bulkhead or tailgate so nothing slides around under a closed cover. It sits below rail height, so the cover closes over it. 40–70 in span; measure between your bed walls at the height you'll use it.[Check price](https://www.amazon.com/dp/B0000AZ9KS?tag=truckcoverguide.com-20) - Cargo management**Rhino USA ratchet straps, 1 in × 15 ft (4-pack)**Works with any coverTie-downs for loads strapped to a bed rack, or tall cargo you haul with a roll-up or folding cover open.[Check price](https://www.amazon.com/dp/B01N7P7EOX?tag=truckcoverguide.com-20) - Cargo management**Migaven heavy-duty truck bed cargo net, 4 × 6 ft**Works with any coverThe fallback when a load sticks up past the rails and the cover has to stay open: a stretch net over the bed keeps loose items in.[Check price](https://www.amazon.com/dp/B0C5CZBXYW?tag=truckcoverguide.com-20) - Cargo management**Rough Country slide-out truck bed cargo tray (10209)**Works with any coverBrings small items to the tailgate so you don't have to crawl under a cover to reach the front of the bed. Rough Country says the 4 in tray fits under any bed cover. Listing fitment: Trucks with a 5'7" or longer bed (tray is 62.3 × 23.6 × 4 in). Per the listing, fits beds 5'7" or longer; 5 ft midsize beds are too short.[Check price](https://www.amazon.com/dp/B0DQVKJ4L7?tag=truckcoverguide.com-20) - Cargo management**DECKED drawer system (XR7)**Works with any coverTwo bed-length lockable drawers under a flat deck rated for 2,000 lb of cargo per the listing. Under a locking cover, it turns the bed into secure tool storage. Listing fitment: 2019–current Ram 1500 (DT) 6'4" bed, not RamBox. A drawer system raises the bed floor, which cuts the height left under a cover. DECKED sells a separate model for each truck and bed length.[Check price](https://www.amazon.com/dp/B0CLMHPNR2?tag=truckcoverguide.com-20) - Bed mat**Husky Liners custom-fit rubberized bed mat (16008)**Works with any coverA rubberized mat with air-dry nibs underneath, so water that gets past a soft cover's seals can drain instead of sitting on the paint. Listing fitment: 2015–2026 Ford F-150 and 2022–2026 F-150 Lightning, 5'7" bed. Per the listing, it will not fit over a drop-in bed liner.[Check price](https://www.amazon.com/dp/B084J67MZR?tag=truckcoverguide.com-20) Compatibility checked November 2026. More in our [truck bed accessories guide](https://truckcoverguide.com/accessories/). ## Featured in our guides - [The 8 Best Tonneau Covers of 2026: Ranked by Type, Truck and Budget](https://truckcoverguide.com/posts/best-tonneau-covers-2026/) - [The Best Tonneau Covers for the Ford F-150 (2021–2026): 7 Picks by Bed and Budget](https://truckcoverguide.com/posts/best-tonneau-cover-for-f150/) - [The Best Tonneau Covers for the Ram 1500 (2019–2026): 7 Picks, Plus RamBox and Split-Tailgate Fit](https://truckcoverguide.com/posts/best-tonneau-cover-for-ram-1500/) - [The Best Tonneau Covers for the Toyota Tacoma (2016–2026): 7 Picks for Both Generations](https://truckcoverguide.com/posts/best-tonneau-cover-for-tacoma/) ## BAK Revolver X4s FAQ ### Is the BAK Revolver X4s waterproof? Not completely, but close. In Car and Driver's hands-on test on a 2024 Ford Maverick, only a small amount of water got into the bed and along the edges. BAK says its flush side seals and beveled edges shed water without drain tubes. ### Does the Revolver X4s block the rear window when rolled up? BAK says it doesn't block the rear window or factory cameras. Car and Driver found the opposite on its short-bed Maverick: fully coiled, the thicker roll significantly affected rear visibility. On a full-size truck the effect may be smaller. ### How long does the Revolver X4s take to install? BAK advertises a 10-minute clamp-on install. Car and Driver's install took about an hour and a half because the cover needed a lot of adjustment to fit well, and it found the job easier with two people. ### What's the difference between the Revolver X4s and X4ts? The X4ts adds T-slot rails, so you can mount racks and accessories. It's a separate listing; the F-150 X4ts showed about $1,550 in Amazon search results when we checked, versus $1,499.99 for the X4s. ## Sources - [amazon.com](https://www.amazon.com/dp/B08WJSTCHZ?tag=truckcoverguide.com-20) - [etrailer.com](https://www.etrailer.com/Tonneau-Cover/BAK-Industries/BAK56ZR.html) - [caranddriver.com](https://www.caranddriver.com/car-accessories/best-tonneau-covers-tested/) Not sold yet? ## Alternatives to the BAK Revolver X4s ![TruXedo Sentry CT Hard Rolling Tonneau Cover](https://truckcoverguide.com/_astro/truxedo-sentry-ct.BUFkF9LC_nAADY.webp) ### [TruXedo Sentry CT Hard Rolling Tonneau Cover](https://truckcoverguide.com/tonneau-covers/truxedo-sentry-ct/) 7.7 - Hard roll-up - Aluminum slats + canvas - 100% bed access Hard roll-up buyers who want the Revolver X4s idea with a canvas-look top, usually for a little less. $$$$ Premium Price tier: Premium Ram 1500 5'7" listing on Amazon [Check price on Amazon](https://www.amazon.com/dp/B07D67K4C9?tag=truckcoverguide.com-20)[Read the full review](https://truckcoverguide.com/tonneau-covers/truxedo-sentry-ct/) ![UnderCover Elite One-Piece Tonneau Cover](https://truckcoverguide.com/_astro/undercover-elite.Bx9jEVOQ_2avLtt.webp) ### [UnderCover Elite One-Piece Tonneau Cover](https://truckcoverguide.com/tonneau-covers/undercover-elite/) 7.6 - Hinged one-piece - ABS composite lid - Full lid opening (parked) - High security Owners who want a keyed, nearly weatherproof lid and never haul anything taller than the bed walls. $$$$ Premium Price tier: Premium F-150 5.5 ft listing on Amazon [Check price on Amazon](https://www.amazon.com/dp/B08L44RPCJ?tag=truckcoverguide.com-20)[Read the full review](https://truckcoverguide.com/tonneau-covers/undercover-elite/) ![RetraxONE MX Retractable Tonneau Cover](https://truckcoverguide.com/_astro/retraxone-mx.C3rZ0CtS_1WdHee.webp) ### [RetraxONE MX Retractable Tonneau Cover](https://truckcoverguide.com/tonneau-covers/retraxone-mx/) 7.3 - Retractable - Polycarbonate slats - 80% bed access - High security Retractable buyers who want the keyed, lock-anywhere convenience for $350–$750 less than the aluminum PRO MX. $$$$ Premium Price tier: Premium F-150 5.5 ft listing on Amazon [Check price on Amazon](https://www.amazon.com/dp/B08L45SKMN?tag=truckcoverguide.com-20)[Read the full review](https://truckcoverguide.com/tonneau-covers/retraxone-mx/) [Compare all 16 covers →](https://truckcoverguide.com/tonneau-covers/) ## Helpful guides [Top picks ### The 8 Best Tonneau Covers of 2026: Ranked by Type, Truck and Budget The best tonneau covers of 2026, ranked: BAKFlip MX4, Gator EFX, Gator roll-up, BAK Revolver X4s, RetraxPRO MX and more, with fitment and price notes. Updated Nov 12, 2026](https://truckcoverguide.com/posts/best-tonneau-covers-2026/)[Ford F-150 ### The Best Tonneau Covers for the Ford F-150 (2021–2026): 7 Picks by Bed and Budget The best tonneau covers for the 2021–2026 Ford F-150: BAKFlip MX4, Gator EFX, Revolver X4s, RetraxPRO MX and more, with part numbers and prices by bed. Updated Nov 12, 2026](https://truckcoverguide.com/posts/best-tonneau-cover-for-f150/)[Ram 1500 ### The Best Tonneau Covers for the Ram 1500 (2019–2026): 7 Picks, Plus RamBox and Split-Tailgate Fit The best tonneau covers for the 2019–2026 Ram 1500: BAKFlip MX4, Gator EFX, Tyger T3, Revolver X4s and more, with RamBox and Multi-Function tailgate notes. Updated Nov 12, 2026](https://truckcoverguide.com/posts/best-tonneau-cover-for-ram-1500/) BAK Revolver X4s $$$$ Premium Price tier: Premium [Check price](https://www.amazon.com/dp/B08WJSTCHZ?tag=truckcoverguide.com-20)