BAKFlip MX4 Upgrade Kit
Our BAKFlip MX4 Upgrade Kit delivers factory-engineered replacement components designed to restore or enhance your tonneau cover's original performance. This comprehensive kit includes all critical hardware and seals engineered specifically for the MX4 platform, ensuring precise fit and weather-tight protection.
We built this upgrade solution for truck owners who demand OEM-level quality when maintaining their investment. Each component undergoes the same rigorous testing as our complete tonneau systems, from UV-resistant rubber seals to corrosion-protected aluminum hardware. Whether you're replacing worn parts after years of heavy use or upgrading specific components for improved functionality, this kit provides everything needed for professional-grade results.
The upgrade process integrates seamlessly with your existing MX4 installation, requiring only basic hand tools and approximately 30-45 minutes. We designed every component for intuitive installation without permanent modifications to your truck bed, maintaining the reversible design that makes BAKFlip covers the choice of lease drivers and resale-conscious owners nationwide.
What's included in the kit
Premium materials & construction
We manufacture every component in the BAKFlip MX4 upgrade kit using the same industrial-grade materials specified for our complete tonneau systems. The aluminum hardware features a multi-stage anodizing process that creates a molecular bond resistant to road salt, de-icing chemicals, and coastal salt spray. This surface treatment extends component life by up to 300% compared to standard powder coating in corrosive environments.
The EPDM rubber seals incorporate carbon black UV stabilizers that prevent hardening and cracking through temperature swings from -40°F to 180°F. We compound this material specifically for automotive weatherstripping applications where flexibility and memory retention are critical. After 10,000 compression cycles—equivalent to five years of daily use—our lab testing confirms these seals maintain 95% of their original rebound characteristics.
Installation & compatibility
Tool requirements
The upgrade kit installation requires only a 3/8″ socket set, Phillips screwdriver, and clean cloth for surface preparation. We recommend a torque wrench for final fastener tightening to our specified 8-10 ft-lbs, though hand-tight plus one-quarter turn achieves acceptable results for most installers. The entire process completes in 30-45 minutes working at a moderate pace with the bed cover in the fully open position.
Vehicle compatibility
This kit fits all BAKFlip MX4 tonneau covers manufactured from 2015 forward, spanning Ford F-Series, Chevrolet Silverado, GMC Sierra, Ram 1500-3500, Toyota Tundra, and Nissan Titan platforms. We engineer universal mounting points that accommodate both 5.5-foot and 8-foot bed lengths without requiring platform-specific components. Verify your existing cover displays the MX4 model designation on the front panel near the cab before ordering.
What's included & part specifications
The complete BAKFlip MX4 upgrade kit includes six high-density foam seal strips measuring 72 inches each, pre-cut to exact panel widths with factory edge profiles. You’ll receive a full aluminum hardware set containing twenty-four stainless steel bolts, reinforced mounting brackets, and corrosion-protected washers sized specifically for MX4 hinge points and rail attachments.
We include two premium EPDM rubber bulb seals for the front and rear panel edges, each measuring 60 inches and featuring our proprietary compression profile that maintains contact pressure across uneven bed rails. The fastener set provides 15% additional hardware beyond the minimum required, ensuring you have replacement components for any dropped or cross-threaded bolts during installation.
Compatible BAKFlip replacement components
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Upgrade kit installation & compatibility questions
This kit is engineered for MX4 covers manufactured from 2015 forward, which feature our current hinge design and mounting point configuration. Pre-2015 models use a different fastener pattern that requires platform-specific components. Contact our technical support team with your cover's serial number to identify the correct upgrade kit for earlier production years.
Yes, the seal strips and rubber bulb seals are the most frequently replaced components and can be installed independently. However, we recommend inspecting your existing hardware for corrosion or wear during seal replacement. If your cover is more than three years old or operated in harsh climates, replacing all hardware simultaneously ensures uniform component life and optimal performance.
Common indicators include water intrusion at panel joints, visible compression set in foam seals where they no longer spring back when touched, difficulty achieving smooth panel folding, or visible corrosion on aluminum mounting hardware. Most covers benefit from seal replacement every 3-5 years depending on climate exposure and usage frequency.
This kit focuses on structural hardware and weathersealing components rather than locking mechanisms. The lock cylinder, striker plate, and related security hardware are available separately through our lock replacement kit. If you're experiencing lock function issues, we recommend addressing those with the dedicated lock service kit designed specifically for security components.
The upgrade kit bundles the most commonly needed maintenance components at a value price compared to purchasing each part separately. You receive all seals, hardware, and fasteners needed for a complete refresh in one package. Individual parts are available if you need to replace only a specific damaged component, but the kit provides better value for routine maintenance or multi-component replacement.
Installing factory-engineered upgrade components does not void your warranty, as these parts are designed specifically for owner installation. We recommend retaining your installation documentation and following all torque specifications in the included guide. Only non-OEM modifications or improper installation techniques that cause damage would affect warranty coverage.
While the kit can be installed year-round, we recommend working in temperatures above 50°F for optimal adhesive bonding on foam seal strips. If you must install in colder conditions, warm the adhesive backing with a hair dryer for 30 seconds before application, and allow the truck to sit in a heated garage for 24 hours after installation to ensure full bond development.