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BAK Industries (RealTruck) BAKFlip MX4 (GEN 3)

A tonneau cover from BAK Industries (RealTruck): hard quad-fold, 400 lb load rating. BAK Industries (RealTruck) makes it for 21 truck generations, each with its own part number and conditions.

By the FitsMyTruck team. Figures come from BAK Industries (RealTruck)'s own spec sheets and fit charts, with 98% of the entries from retailer listings where BAK Industries (RealTruck) publishes no figure, part numbers are checked against the live listings, and the page is reviewed before it goes up. Last reviewed Oct 24, 2026.

The BAK Industries (RealTruck) BAKFlip MX4 (GEN 3) in brief

The BAKFlip MX4 (GEN 3) is a hard quad-fold cover with aluminum panels from BAK Industries, a RealTruck brand. The maker lists a distributed load rating of 400 lb and a 5-year warranty, and the install method is clamp-on with no drilling. The maker's site is bakindustries.com. BAK lists 39 part numbers across 21 truck and year-range entries, including the 2015-2020 and 2021-2026 Ford F-150, the 2019-2026 Silverado 1500, Sierra 1500 and Ram 1500, the 2022-2026 Toyota Tundra and the 2023-2026 Ford F-250 / F-350 Super Duty. Smaller trucks are covered as well: Ranger, Maverick, Colorado, Canyon, Frontier, Gladiator and Ridgeline. Bed lengths in the part labels run from 4ft 4in on the Maverick to 8ft on the F-150, Silverado, Sierra and Super Duty. Part numbers start with BAK-448, and a few end in RB or T for the RamBox and deck rail versions.

hard quad-foldCover type
aluminumPanel material
400 lbDistributed load rating
5 yearsWarranty

Part numbers, applications and specifications

  • BAK-448329

    BAKFlip MX4 (GEN 3) BAK-448329

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448327

    BAKFlip MX4 (GEN 3) BAK-448327

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448328

    BAKFlip MX4 (GEN 3) BAK-448328

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448339

    BAKFlip MX4 (GEN 3) BAK-448339

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448337

    BAKFlip MX4 (GEN 3) BAK-448337

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    No Amazon listing found

  • BAK-448338

    BAKFlip MX4 (GEN 3) BAK-448338

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448130

    BAKFlip MX4 (GEN 3) BAK-448130

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    No Amazon listing found

  • BAK-448131

    BAKFlip MX4 (GEN 3) BAK-448131

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    No Amazon listing found

  • BAK-448132

    BAKFlip MX4 (GEN 3) BAK-448132

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    No Amazon listing found

  • BAK-448226

    BAKFlip MX4 (GEN 3) BAK-448226

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448227RB

    BAKFlip MX4 (GEN 3) BAK-448227RB

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448225

    BAKFlip MX4 (GEN 3) BAK-448225

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448426

    BAKFlip MX4 (GEN 3) BAK-448426

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448427

    BAKFlip MX4 (GEN 3) BAK-448427

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448446

    BAKFlip MX4 (GEN 3) BAK-448446

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448447

    BAKFlip MX4 (GEN 3) BAK-448447

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448440

    BAKFlip MX4 (GEN 3) BAK-448440

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448441

    BAKFlip MX4 (GEN 3) BAK-448441

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448135

    BAKFlip MX4 (GEN 3) BAK-448135 (GMC Sierra 1500 5'8")

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methoddrill required
    Check price on Amazon

  • BAK-448332

    BAKFlip MX4 (GEN 3) BAK-448332 (Ranger 5'1" bed)

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448333

    BAKFlip MX4 (GEN 3) BAK-448333 (Ranger 6'1" bed)

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448342

    BAKFlip MX4 (GEN 3) BAK-448342 (Ranger 5'1" bed)

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    No Amazon listing found

  • BAK-448324

    BAKFlip MX4 (GEN 3) BAK-448324 (Maverick 4'4" bed)

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon

  • BAK-448146

    BAKFlip MX4 (GEN 3) BAK-448146 (Colorado/Canyon 5'2" bed)

    • Cover typehard quad-fold
    • Panel materialaluminum
    • Distributed load rating400 lb
    • Warranty5 years
    • Install methodclamp-on, no drill
    Check price on Amazon
15 more part numbers
  • BAK-448538: BAKFlip MX4 (GEN 3) BAK-448538 (Frontier 5' bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448539: BAKFlip MX4 (GEN 3) BAK-448539 (Frontier 6'1" bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448506: BAKFlip MX4 (GEN 3) BAK-448506 (Frontier 5' bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448507: BAKFlip MX4 (GEN 3) BAK-448507 (Frontier 6' bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448701: BAKFlip MX4 (GEN 3) BAK-448701 (Gladiator 5' bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448602: BAKFlip MX4 (GEN 3) BAK-448602 (Ridgeline 5'4" bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448120: BAKFlip MX4 (GEN 3) BAK-448120 (Silverado/Sierra 1500 5'8" bed), hard quad-fold, aluminum
  • BAK-448121: BAKFlip MX4 (GEN 3) BAK-448121 (Silverado/Sierra 1500 6'6" bed), hard quad-fold, aluminum
  • BAK-448409: BAKFlip MX4 (GEN 3) BAK-448409 (Tundra 5'7" bed), hard quad-fold, aluminum Check price on Amazon
  • BAK-448409T: BAKFlip MX4 (GEN 3) BAK-448409T (Tundra 5'7" bed, with deck rail), hard quad-fold, aluminum Check price on Amazon
  • BAK-448410T: BAKFlip MX4 (GEN 3) BAK-448410T (Tundra 6'7" bed, with deck rail), hard quad-fold, aluminum Check price on Amazon
  • BAK-448330: BAKFlip MX4 (GEN 3) BAK-448330 (Super Duty 6'10" bed), hard quad-fold, aluminum
  • BAK-448331: BAKFlip MX4 (GEN 3) BAK-448331 (Super Duty 8' bed), hard quad-fold, aluminum
  • BAK-448133: BAKFlip MX4 (GEN 3) BAK-448133 (Silverado/Sierra 2500HD 6'10" bed), hard quad-fold, aluminum
  • BAK-448134: BAKFlip MX4 (GEN 3) BAK-448134 (Silverado/Sierra 2500HD 8' bed), hard quad-fold, aluminum

Which part number is yours

Start with the truck, then the bed length in the part label. The F-150 splits at 2021. BAK-448329 (5ft 7in), 448327 (6ft 7in) and 448328 (8ft) cover 2015-2020, while 448339, 448337 and 448338 cover 2021 on. Silverado and Sierra 1500 use 448130 (5ft 8in), 448131 (6ft 6in) and 448132 (8ft), and the 5ft 8in listing says it will not work with factory bed storage boxes. Read the Ram 1500 listings twice. BAK-448226 is the non-RamBox 5ft 7in part and is listed as not compatible with RamBox or the RamBar Bed Bar. BAK-448227RB is the RamBox version. BAK-448225 is listed as compatible with the Multifunction Tailgate and not with the Ram TRX Bed Bar, and its RamBox status is not stated. Tundra parts ending in T are for the factory deck rail system, and 448446 and 448447 also require one. BAK-448440 requires removal of tie-down cleats, which cannot be reinstalled. BAK-448135, a Sierra 1500 5ft 8in part, is listed as drill required, which conflicts with the maker's clamp-on description, so confirm with BAK before ordering.

Trucks it fits

  • 2015-2020 Ford F-150

    • Fits 5.5 ft bed, BAK-448329
    • Fits 6.5 ft bed, BAK-448327
    • Fits 8 ft bed, BAK-448328

    RealTruck lists BAK-448329 for 2015-2020 Ford F150 and 2017-2020 F150 Raptor with the 5ft 7in bed. A 2023 answer on RealTruck's MX4 product page also names BAK-448329 for a 2020 F150 with a 5ft 7in bed. Confirm with the maker before ordering. RealTruck lists BAK-448327 for 2015-2020 Ford F150 with the 6ft 7in bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2Tonneau covers for this truck, bed 3

  • 2021-2026 Ford F-150

    • Fits 5.5 ft bed, BAK-448339
    • Fits 6.5 ft bed, BAK-448337
    • Fits 8 ft bed, BAK-448338

    RealTruck lists BAK-448339 for 2021-2026 Ford F150 and F150 Raptor, and 2022-2026 F150 Lightning, with the 5ft 7in bed. Confirm with the maker before ordering. RealTruck lists BAK-448337 for 2021-2026 Ford F150 with the 6ft 7in bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2Tonneau covers for this truck, bed 3

  • 2019-2026 Chevrolet Silverado 1500

    • Fits Short Bed bed, BAK-448130
    • Fits Standard Bed bed, BAK-448131
    • Fits Long Bed bed, BAK-448132

    RealTruck lists BAK-448130 for 2019-2026 Chevy Silverado and GMC Sierra 1500 with the 5ft 8in bed. It does not work with factory bed storage boxes. Confirm with the maker before ordering. RealTruck lists BAK-448131 for 2019-2025 Chevy Silverado and GMC Sierra 1500 with the 6ft 6in bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2Tonneau covers for this truck, bed 3

  • 2019-2026 GMC Sierra 1500

    • Fits Short Bed bed, BAK-448130
    • Fits Standard Bed bed, BAK-448131
    • Fits Long Bed bed, BAK-448132
    • Fits Short Bed bed, BAK-448135

    RealTruck lists BAK-448130 for 2019-2026 Chevy Silverado and GMC Sierra 1500 with the 5ft 8in bed. It does not work with factory bed storage boxes. Confirm with the maker before ordering. RealTruck lists BAK-448131 for 2019-2025 Chevy Silverado and GMC Sierra 1500 with the 6ft 6in bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2Tonneau covers for this truck, bed 3

  • 2019-2026 Ram 1500

    • Fits 5.58 ft bed, BAK-448226
    • Fits 5.58 ft bed, BAK-448227RB
    • Fits 6.33 ft bed, BAK-448225

    RealTruck lists BAK-448226 for 2019-2026 Ram 1500 with the 5ft 7in bed and no RamBox. It is not compatible with RamBox or the RamBar Bed Bar, and it works with or without the Multifunction Tailgate. Confirm with the maker before ordering. RealTruck lists BAK-448227RB for 2019-2026 Ram 1500 with the 5ft 7in bed, the RamBox version. It works with or without the Multifunction Tailgate. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2016-2023 Toyota Tacoma

    • Fits 60.5 in bed bed, BAK-448426
    • Fits 73.7 in bed bed, BAK-448427

    RealTruck lists BAK-448426 for 2016-2023 Toyota Tacoma with the 5ft 1in bed. Confirm with the maker before ordering. RealTruck lists BAK-448427 for 2016-2023 Toyota Tacoma with the 6ft 2in bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2024-2026 Toyota Tacoma

    • Fits 5 ft bed, BAK-448446
    • Fits with condition 5 ft bed, BAK-448446
    • Fits 6 ft bed, BAK-448447
    • Fits with condition 6 ft bed, BAK-448447

    RealTruck lists BAK-448446 for 2024-2026 Toyota Tacoma with the 5ft bed. Installation requires the deck rail system, which you can buy from Toyota if the truck does not have it. Confirm with the maker before ordering. RealTruck says the cover needs the deck rail system to install. If the truck does not have it, you can buy it from Toyota.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2022-2026 Toyota Tundra

    • Fits 5.5 ft bed, BAK-448440
    • Fits 6.5 ft bed, BAK-448441

    RealTruck lists BAK-448440 for 2022-2026 Toyota Tundra with the 5ft 7in bed. Installation requires removing the tie-down cleats if the truck has them, and the cleats cannot be reinstalled. Confirm with the maker before ordering. RealTruck lists BAK-448441 for 2022-2025 Toyota Tundra with the 6ft 7in bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2019-2023 Ford Ranger

    • Fits SuperCrew box bed, BAK-448332
    • Fits SuperCab box bed, BAK-448333

    RealTruck lists BAK-448332 for the 2019-2023 Ford Ranger with a 5'1" bed. Confirm with the maker before ordering. Rack Attack lists part 448333 for the 6'1" bed, and Liftkits4less lists the same part for a 6 foot bed on the 2019-2023 Ford Ranger. Both are retailers, not the maker. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2024-2026 Ford Ranger

    • Fits SuperCrew box bed, BAK-448342

    RealTruck lists BAK-448342 for the 2024-2025 Ford Ranger and Ranger Raptor with a 5'1" bed, while Rudy's Diesel calls it a 5' bed. Confirm with the maker before ordering.

    Check price on AmazonAll tonneau covers for this truck

  • 2022-2026 Ford Maverick

    • Fits Pickup box (FlexBed) bed, BAK-448324

    RealTruck lists BAK-448324 for the 2022-2026 Ford Maverick with a 4'4" bed. Fidanza and FI Performance call the same part 4.5 ft, so retailers disagree on the bed length. Confirm with the maker before ordering.

    Check price on AmazonAll tonneau covers for this truck

  • 2023-2026 Chevrolet Colorado

    • Fits Crew Cab box (only box on the compare page) bed, BAK-448146

    One retailer lists BAK-448146 for the 2023-2025 Chevrolet Colorado and GMC Canyon with a 5'2" bed, and other retailers extend it to 2026. The T-slot version (449146TS) is a separate part. Confirm with the maker before ordering.

    Check price on AmazonAll tonneau covers for this truck

  • 2023-2026 GMC Canyon

    • Fits Box on the compare page bed, BAK-448146

    One retailer lists BAK-448146 for the 2023-2025 Chevrolet Colorado and GMC Canyon with a 5'2" bed, and other retailers extend it to 2026. The T-slot version (449146TS) is a separate part. Confirm with the maker before ordering.

    Check price on AmazonAll tonneau covers for this truck

  • 2022-2026 Nissan Frontier

    • Fits Crew Cab Standard Bed bed, BAK-448538
    • Fits King Cab bed bed, BAK-448539
    • Fits 6 ft bed, BAK-448539

    Rack Attack lists part 448538 for 2022-2026 Nissan Frontier 5'0" beds. One retailer says it is discontinued, and the load rating is 400 lb on one listing and 500 lb on another. Confirm with the maker before ordering. RealTruck lists BAK-448539 for the 2022-2026 Nissan Frontier with a 6'1" bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2005-2021 Nissan Frontier

    • Fits Crew Cab Standard Bed bed, BAK-448506
    • Fits King Cab bed bed, BAK-448507
    • Fits Crew Cab Long Bed bed, BAK-448507

    Rack Attack lists part 448506 for the 2005-2021 Nissan Frontier and Suzuki Equator with a 5'0" bed. Rack Attack's list names a 4'11" bed for 2005, and JB's Power Centre also ties 448506 to 4'11", so the bed length is not settled. Confirm with the maker before ordering. Rudy's Diesel lists BAK-448507, the BAKFlip MX4 (Gen 3), for the 2005-2021 Frontier with a 6' bed. Liftkits4less lists the same part for the 2005-2021 Nissan Frontier and 2009-2012 Suzuki Equator. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2020-2026 Jeep Gladiator

    • Fits 5 ft bed, BAK-448701

    RealTruck lists BAK-448701 for the 2020-2025 Jeep Gladiator with a 5' bed. It works on models with or without the Trail Rail and is not recommended for soft tops. An eBay listing says 2020-2024. Confirm with the maker before ordering.

    Check price on AmazonAll tonneau covers for this truck

  • 2017-2026 Honda Ridgeline

    • Fits Truck bed bed, BAK-448602

    The BAKFlip MX4 (Gen 3) 448602 is listed for the 2017-2026 Honda Ridgeline with a 5'4" bed by Walmart and RealTruck, though other Walmart listings say 2017-2023 and 2017-2025. Confirm with the maker before ordering.

    Check price on AmazonAll tonneau covers for this truck

  • 2014-2018 Chevrolet Silverado 1500

    • Fits 5.67 ft bed, BAK-448120
    • Fits 6.5 ft bed, BAK-448121

    RealTruck lists BAK-448120 for the 2014-2018 Chevy Silverado and GMC Sierra 1500 with a 5'8" bed, while Rack Attack and JBS call it 5'9". HSP Diesel adds the 2019 Legacy and Limited and the 2015-2019 1500, 2500 and 3500 (2014 is 1500 only). Confirm with the maker before ordering. HSP Diesel lists BAK 448121 for the 6'6" bed on the 2014 1500 only and the 2015-2019 1500, 2500 and 3500. JBS lists 448121 under the 2014-2018 Silverado 1500 without a bed length, so the two retailers disagree on the bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2007-2021 Toyota Tundra

    • Fits Short Bed bed, BAK-448409
    • Fits Short Bed bed, BAK-448409T
    • Fits Standard Bed bed, BAK-448410T

    RealTruck lists BAK-448409 for the 2007-2021 Toyota Tundra with a 5'7" bed. Rack Attack lists 448409 as the 5'7" version without deck rails. Confirm with the maker before ordering. Rack Attack lists 448409T as the 5'7" Tundra version with deck rails. It is a separate part from 448409, which is for trucks without deck rails. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2023-2026 Ford F-250 / F-350 Super Duty

    • Fits 6.75 ft bed, BAK-448330
    • Fits 8 ft bed, BAK-448331

    Rack Attack's fitment list for 448330 includes the 2023-2025 F-250 and F-350 Super Duty with a 6'10" bed. RealTruck sells it for the 2017-2025 F-250 and F-350 Super Duty with a 6'10" bed (81.9"), other listings say 2017-2023 or 2024, and a Walmart listing calls the bed 6'9". Confirm with the maker before ordering. RealTruck lists BAK-448331 for the 2017-2026 Ford F-250, F-350 and F-450 with an 8' bed. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

  • 2020-2026 Chevrolet Silverado 2500 HD

    • Fits Standard Bed bed, BAK-448133
    • Fits Long Bed bed, BAK-448134

    JBS lists the BAKFlip MX4 for the 2020-2022 Silverado and Sierra 2500HD and 3500HD with a 6'10" bed, while HSP Diesel says 2020-2021 and 6'9". No listing confirms 2023-2025 coverage for this part, so the year range stops at 2022. Confirm with the maker before ordering. Rack Attack lists 448134 for the 2020-2026 Silverado and Sierra 2500 and 3500 HD with an 8'2" bed, and Berry Performance gives the same range. Other sellers list only 2020-2022, and some 8 ft applications may not allow a third brake light view. Confirm with the maker before ordering.

    Check price on AmazonTonneau covers for this truck, bed 1Tonneau covers for this truck, bed 2

Before you buy a tonneau cover

Questions owners ask

Which BAKFlip MX4 fits a 2015-2020 F-150 with a 5ft 7in bed?

RealTruck titles BAK-448329 as Fits 2015-2020 Ford F150, 2017-2020 F150 Raptor, 5ft 7in Bed. For a 2021 or newer F-150 with the same bed length, the listing is BAK-448339.

Which BAKFlip MX4 part works with a RamBox on a Ram 1500?

BAK-448227RB is listed as the RamBox-compatible version. BAK-448226 is the non-RamBox 5ft 7in part, and its listing says it is not compatible with RamBox or the RamBar Bed Bar.

Does the BAKFlip MX4 need drilling?

The maker lists clamp-on, no drill, with a 400 lb distributed load rating and a 5-year warranty. One exception is BAK-448135, a Sierra 1500 5ft 8in part listed as drill required, which conflicts with the maker's clamp-on description, so confirm with BAK before ordering.

Which BAKFlip MX4 is for a Tundra with the deck rail system?

BAK-448409T is listed for a 5ft 7in Tundra bed with the factory deck rail, and BAK-448410T for a 6ft 7in bed with the deck rail. No 6ft 7in Tundra part without deck rails is listed.

Which BAKFlip MX4 parts are listed for the Ranger?

BAK-448332 and BAK-448342 are listed for a Ranger 5ft 1in bed, and BAK-448333 for a Ranger 6ft 1in bed. The model-year split between the two 5ft 1in parts is not stated.

Where these figures come from

Every figure above is BAK Industries (RealTruck)'s own, from its spec sheets, fit charts and install guides, checked on Oct 24, 2026.

40 maker documents
  • RealTruck (BAK Industries), manufacturer product page (read in browser pane), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of manufacturer product page (page not fetched, WAF challenge), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rudy's Diesel (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • JBS Power Centre (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • RealTruck (BAK Industries), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • JBS Power Centre (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
  • Rack Attack (retailer), search-result title and summary of retailer/manufacturer listing (page not fetched, WAF challenge on RealTruck), read Oct 24, 2026
BAK Industries (RealTruck) BAKFlip MX4 (GEN 3) BAK-448329Check price on Amazon