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BAKFLIP MX4 Specs, Install, and Pricing
Buy the BAKFLIP MX4 from Truck Bed Barn. Fitment guarantee. Call (623) 272-6510 for a price you can’t get online.
What the BAKFLIP MX4 is
The BAKFLIP MX4 is a hard-folding aluminium tonneau cover made by BAK Industries (a RealTruck brand), assembled in Missouri, with a 400-pound evenly distributed load rating, integrated drainage, automatic latching panels, and a 5-year limited warranty. List price is $1,149.99. It fits most U.S. half-ton and heavy-duty pickups from 2007 forward, including the Ford F-150, Chevy Silverado 1500, GMC Sierra 1500, RAM 1500, Toyota Tundra, and Toyota Tacoma. Updated April 2026.
BAKFLIP MX4 at a glance
| Spec | Value |
|---|---|
| Product name | BAKFLIP MX4 Hard Folding Tonneau Cover |
| Type | Hard-folding tonneau cover |
| Generation | GEN 3 (current) |
| Format | Four-panel trifold operation |
| Top panel material | High-density polymer-reinforced aluminium |
| Frame material | Aluminium extrusion |
| Seal material | EPDM rubber |
| Hardware material | Steel (stainless on key fasteners) |
| Finish | Matte black, textured |
| Panel count | 4 |
| Total cover weight | Approximately 70 lbs |
| Load rating (evenly distributed) | 400 lbs |
| Drainage system | Integrated water drainage tubes |
| Drainage tube count | 2 |
| Lock type | Automatic latching panels |
| Lock release | Cable-pull, both sides of bed |
| Lock positions | 3 along the bed rails |
| Bed access (folded) | 100% |
| Operating temperature low | −40°F |
| Operating temperature high | 180°F |
| Humidity tolerance | 0 to 95% |
| Warranty term | 5-year limited |
| Country of assembly | Missouri, USA |
| Manufacturer | BAK Industries |
| Parent company | RealTruck |
| Manufacturer install estimate | 30 minutes |
| Real-world install estimate | 60 to 90 minutes |
| First-timer install estimate | 2 to 4 hours |
| Drilling required | No |
| One-person install | Yes |
| Improvement vs. prior generation | 22% stronger, 12% faster install |
| List price (April 2026) | $1,149.99 USD |
| Truck Bed Barn phone price | Below list; call (623) 272-6510 |
Materials breakdown
| Component | Material | Function |
|---|---|---|
| Top panel skin | High-density polymer-reinforced aluminium | Primary load-bearing surface |
| Frame | Aluminium extrusion | Structural perimeter |
| Side rails | Aluminium | Mount cover to truck bed |
| Clamps | Steel with rubber pads | No-drill bed attachment |
| Perimeter seals | EPDM rubber | Weather sealing along rails and panel edges |
| Latches | Automatic latching mechanism | Panel-to-rail engagement |
| Lock cable | Steel cable | Manual latch release |
| Hardware | Steel; stainless on key fasteners | Bolts, screws, fasteners |
| Prop rod | Aluminium | Hold panels open against cab |
Per-truck fitment matrix
Verify exact year, trim, and bed at the BAKFLIP MX4 product page or call (623) 272-6510.
| Make | Model | Bed lengths supported | Year range |
|---|---|---|---|
| Ford | F-150 | 5.5ft, 6.5ft, 8ft | 2004 to 2025 |
| Ford | F-250 / F-350 / F-450 Super Duty | 6.75ft, 8ft | 2008 to 2025 |
| Ford | Ranger | 5ft, 6ft | 2019 to 2025 |
| Ford | Maverick | 4.5ft | 2022 to 2025 |
| Chevrolet | Silverado 1500 | 5.75ft, 6.5ft, 8ft | 2007 to 2025 |
| Chevrolet | Silverado 2500 / 3500 HD | 6.75ft, 8ft | 2007 to 2025 |
| Chevrolet | Colorado | 5ft, 6ft | 2015 to 2025 |
| GMC | Sierra 1500 | 5.75ft, 6.5ft, 8ft | 2007 to 2025 |
| GMC | Sierra 2500 / 3500 HD | 6.75ft, 8ft | 2007 to 2025 |
| GMC | Canyon | 5ft, 6ft | 2015 to 2025 |
| RAM | 1500 | 5.5ft, 6.5ft | 2009 to 2025 |
| RAM | 1500 Classic | 5.5ft, 6.5ft, 8ft | 2019 to 2025 |
| RAM | 2500 / 3500 HD | 6.5ft, 8ft | 2010 to 2025 |
| Toyota | Tundra | 5.5ft, 6.5ft, 8ft | 2007 to 2025 |
| Toyota | Tacoma | 5ft, 6ft | 2005 to 2025 |
| Nissan | Titan / Titan XD | 5.5ft, 6.5ft | 2016 to 2025 |
| Nissan | Frontier | 5ft, 6ft | 2005 to 2025 |
| Jeep | Gladiator | 5ft | 2020 to 2025 |
| Honda | Ridgeline | 5ft | 2017 to 2025 |
BAKFLIP MX4 pricing
| Item | Value |
|---|---|
| List price (April 2026) | $1,149.99 USD |
| Truck Bed Barn online price | At list, publicly displayed |
| Truck Bed Barn phone price | Below list; call (623) 272-6510 |
| Fitment guarantee | Truck Bed Barn pays return shipping if we ship the wrong cover |
| Standard shipping | Free in the continental US |
| Response time (business hours) | 3 minutes |
BAK lineup comparison
| Model | Type | Material | Finish | Load rating | Warranty | List price | Best for |
|---|---|---|---|---|---|---|---|
| BAKFLIP MX4 | Hard fold | Polymer-reinforced aluminium | Matte black, textured | 400 lbs | 5-year limited | $1,149.99 | Daily-driver upgrade |
| BAKFLIP G2 | Hard fold | Aluminium with insulated core | Semi-gloss | 300 lbs | 3-year limited | $999.99 | Entry into BAK |
| BAKFLIP FiberMax | Hard fold | Fibreglass-reinforced polymer | Matte | <NEEDS UPDATE> | 5-year limited | $1,249.99 | Lighter solo lift-off |
| BAKFLIP F1 | Hard fold | Polymer-reinforced aluminium | Matte top, gloss panels | 400 lbs | Lifetime structural | ~$1,899 | Top-of-line buyer |
| BAKFLIP MX4 TS | Hard fold + T-slot | Polymer-reinforced aluminium | Matte black, textured | 400 lbs | 5-year limited | $1,349.99 | Daily-drive + tie-down |
| BAK Revolver X4s | Hard roll-up | Aluminium slats | Matte | <NEEDS UPDATE> | Limited | $1,299.99 | Full bed access without unfolding |
| BAK Revolver X4ts | Hard roll-up + T-slot | Aluminium slats | Matte | <NEEDS UPDATE> | Limited | $1,449.99 | Roll-up + tie-down |
| BAK Revolver X2 | Hard roll-up | Aluminium slats | Matte | <NEEDS UPDATE> | Limited | $1,199.99 | Older roll-up format |
Install steps
Manufacturer estimate: 30 minutes. Real-world: 60 to 90 minutes for experienced installer; 2 to 4 hours for first-timers. No drilling on stock truck beds.
| Step | Action | Tool | Torque or spec | Time | Common pitfall |
|---|---|---|---|---|---|
| 1 | Pre-install prep: clear bed, inspect parts, gather tools | All tools at hand | n/a | 5 to 10 min | Skipping the parts check delays the whole job |
| 2 | Side rail install (driver and passenger) | 13mm socket, torque wrench | 15 to 25 ft-lbs typical | 15 to 25 min | Over-torque cracks aluminium F-150 rails |
| 3 | Panel assembly + hinge alignment, tailgate forward | 10mm socket, screwdriver | n/a | 10 to 15 min | Rushing causes binding panels |
| 4 | Seal install (clean rail tops, apply EPDM seals) | Isopropyl alcohol, clean rag | Install temp above 50°F | 5 to 10 min | Cold seals do not bond properly |
| 5 | Latch mechanism setup and adjustment | Phillips screwdriver | All 3 lock positions engage cleanly | 5 min | Skipped adjustment causes loose closing |
| 6 | Test cycle: fold/unfold, water-spray, verify tailgate clearance | n/a | Tailgate must clear cover in every position | 5 to 10 min | Skipping the tailgate clearance test |
Warranty terms
| Term | Value |
|---|---|
| Length | 5 years |
| Coverage | Defects in material and workmanship |
| Claim contact | BAK Industries directly; Truck Bed Barn assists with claim filing for orders bought from us |
| Required for claim | Original proof of purchase + photos of the defect |
| Common exclusions | Damage from misuse, accidents, modifications, weather damage outside operating range |
Operating conditions
| Condition | Spec | Notes |
|---|---|---|
| Operating temperature low | −40°F | Manufacturer-tested |
| Operating temperature high | 180°F | Manufacturer-tested |
| Humidity range | 0 to 95% | Manufacturer-tested |
| Light rain | Sealed | No expected leaks |
| Heavy rain | Mostly sealed | Minor corner seepage reported |
| Snow | Operates normally | Brush snow off panels before opening |
| Max load (evenly distributed) | 400 lbs | Across all four panels |
| Point load | Not recommended | Use even distribution only |
| Seal install temperature | Above 50°F | Below this, EPDM seals do not bond properly |
Use case suitability
| Use case | MX4 verdict | Why |
|---|---|---|
| Daily-drive truck | Excellent | Matte finish, flush mount, 5-year warranty |
| Hauling lumber on top | Good with caveat | 400 lb evenly distributed only |
| Wet cargo in heavy rain | Avoid | Minor corner seepage in sustained heavy rainfall |
| Snow country (cold storage) | Good | Tested to −40°F |
| High-heat / desert climate | Good | Tested to 180°F |
| Frequent full removal (more than twice a month) | Avoid | Lift-off is a two-person job |
| Long bed (8ft) | Good | 8ft variants available |
| Short bed (5 to 5.75ft) | Good | Short-bed variants available |
| With factory bed liner | Good with caveat | Verify rail height for thicker drop-in liners |
| Job-site security (locked tools) | Excellent | 3 lock positions; locks closed when tailgate locks |
| Hauling tall cargo (ladders, kayaks) | Avoid | Hard-fold format does not accommodate |
| Aluminium-bed F-150 (2015 and newer) | Good with caveat | Use lower torque spec to avoid cracking the bed |
| Steel-bed Silverado / RAM / Tundra | Good | Standard torque spec applies |
BAKFLIP MX4 FAQs
| Question | Answer |
|---|---|
| What is the BAKFLIP MX4? | Hard-folding, four-panel tonneau cover by BAK Industries with polymer-reinforced aluminium top panels, matte black textured finish, 400-lb evenly distributed load rating, 5-year limited warranty. List price $1,149.99. |
| How much does the BAKFLIP MX4 cost? | List price $1,149.99 USD. Truck Bed Barn offers a better number over the phone at (623) 272-6510. |
| How long does the BAKFLIP MX4 take to install? | Manufacturer claim 30 minutes. Real-world 60 to 90 minutes for experienced installer, 2 to 4 hours for first-timers. No drilling. |
| Does the BAKFLIP MX4 lock? | Yes. Automatic latching panels with cable-pull release, three lock positions. Cover locks closed when the tailgate is locked. |
| Does the BAKFLIP MX4 leak? | Integrated drainage moves water out of the bed. Minor corner seepage in heavy rain is a known characteristic across BAK’s hard-fold lineup. |
| How much weight can the BAKFLIP MX4 hold? | 400 lbs evenly distributed across the panels. Concentrated point loads are not recommended. |
| Will the BAKFLIP MX4 fit my truck? | Most U.S. half-ton and HD pickups from 2007 forward. Verify exact year/trim/bed at the product page or text (623) 272-6510 with a photo for a 3-minute confirmation. |
| What is the warranty on the BAKFLIP MX4? | 5-year limited from BAK Industries on material and workmanship. The Lifetime structural warranty is on the BAKFLIP F1, not the MX4. |
| Is the BAKFLIP MX4 made in the USA? | Assembled in Missouri by BAK Industries, a RealTruck brand. |
| How heavy is the BAKFLIP MX4? | Approximately 70 lbs total per third-party reviews including Commercial Carrier Journal. One-person lift if you remove it from the truck. |
| BAKFLIP MX4 vs BAKFLIP G2? | MX4 has matte black textured finish, 400-lb load rating, and 5-year warranty. G2 has semi-gloss finish, 300-lb load rating, and 3-year warranty. G2 lists at $999.99; MX4 at $1,149.99. |
| BAKFLIP MX4 vs BAKFLIP F1? | F1 is BAK’s top-of-line cover with dual matte-and-gloss finish and Lifetime structural warranty, ~$1,899. MX4 is the daily-driver pick at $1,149.99. |
| Does the BAKFLIP MX4 work with a factory bed liner? | Yes in most configurations. Verify rail height for thicker drop-in liners. |
| Can I open the tailgate with the BAKFLIP MX4 closed? | Yes. Tailgate operates normally with the cover at any position. |
| Does the BAKFLIP MX4 require drilling? | No. Tight-fit clamps, bolt-on rails. No cutting, no trimming, no drilling on stock beds. |
| Can one person install the BAKFLIP MX4? | Yes. Rated as one-person install. Two people speed up the rail-alignment phase. |
| What temperature range does the BAKFLIP MX4 work in? | −40°F to 180°F per BAK testing. The seal install itself needs to be done above 50°F. |
| Is the BAKFLIP MX4 weatherproof? | Weather-resistant with integrated drainage and re-engineered perimeter seals. Minor corner seepage in sustained heavy rain. |
| Does the BAKFLIP MX4 hurt fuel economy? | Most owners report a small improvement at highway speeds. Real-world gains are modest, usually under one mpg. |
| How do I clean the BAKFLIP MX4? | Mild soap, water, soft cloth on the matte top. Avoid solvent cleaners, abrasive pads, and high-pressure jets directly on seal lines. |
Sources and citations
| Source | Use |
|---|---|
| BAKFlip MX4 (GEN 3) on RealTruck | Manufacturer-canonical reference since BAK Industries was acquired by RealTruck |
| Commercial Carrier Journal install + review by Tom Quimby (September 2021) | Source of weight (~70 lbs) and real-world install observations |
| BAKFlipStore install guide | Six-phase install reference with truck-specific torque specs |
| BAKFLIP MX4 product page on Truck Bed Barn | Current pricing, fitment lookup, fitment guarantee, buy |
| BAKFLIP G2 spec sheet on Truck Bed Barn | Companion spec sheet for the G2, the entry point in the BAK lineup |
| BAK Industries collection on Truck Bed Barn | Full BAK lineup including the G2, F1, FiberMax, MX4 TS, Revolver X4s, X4ts, X2 |
Real fitment check in three minutes. A price you can’t get anywhere online. Call (623) 272-6510 or text a photo of your truck and bed.