BAK Revolver X4s Hard Roll-Up Tonneau Cover

Start with your truck's year, make and model, then measure the bed along the rail from the bulkhead to the inside of the closed tailgate. Match that to the version for your truck, then check the bed options BAK lists separate parts for, such as RamBox, factory deck rails, GMC's CarbonPro bed or the Silverado EV Midgate, and the body-style changeover years. Each page lists what it fits and what it does not, or send us your VIN.

Most clamp to the bed rails with no drilling, following BAK's standard sheet. A few trucks have their own sheet: the 2022+ Tundra fastens into existing bed holes, the 2024+ Ranger and Tacoma need the factory cargo rails, and the Ridgeline and Gladiator use bolt-on brackets. Each page links the right sheet.

Same patented aluminum slats, locking rails, slam latches and 400 lb rating. The X4s adds TriShield 70-grade matte vinyl, an all-matte-black finish on the slats, clamps and hardware, and BAK covers it for 5 years instead of the X2's 3.

It is built to: one-piece vinyl with no visible seams, flush side seals and a bulkhead seal. BAK calls it the most leakproof of all folding, roll-up and retractable covers, but its own install sheet notes the cover is not airtight, so plan on weather-resistant rather than sealed. Clear snow and ice off before you open it.

BAK rates the closed cover at 400 lb, evenly distributed. BAK's sheet also says not to drive with objects on top of the cover or tie cargo to it.

Yes. Roll it fully to the cab and secure it with both straps. BAK says never to drive with the cover partly open, and keeping it secured is a warranty condition.