BAK BAKFlip MX4 Hard Folding Truck Bed Cover

2019–2026 Ram 1500 (5'7" Bed with RamBox)

448227RB

Overview:

The BAKFlip MX4 (GEN 3) is the latest evolution of the world’s best-selling hard folding truck bed cover, designed specifically for Ram 1500 models from 2019 through 2026 with a 5'7" bed and RamBox. This premium tonneau cover combines rugged durability, enhanced security, and sleek styling to protect your cargo while maintaining full bed access. Ideal for truck owners who demand strength, weather resistance, and a seamless factory-like appearance, the MX4 offers an unmatched blend of functionality and design.

Whether you’re hauling tools, gear, or everyday cargo, the MX4’s reinforced construction and advanced sealing system ensure your belongings stay dry and secure in all conditions. Its flush-mount design integrates perfectly with your Ram’s bed rails, preserving your truck’s profile and enhancing its overall look.

Key Features:

The BAKFlip MX4 (GEN 3) incorporates numerous improvements over previous generations, delivering superior performance and ease of use:

• High-density polymer-reinforced aluminum top panels that are 22% stronger than the original MX4
• Heavy-duty aluminum side rails and frame supporting up to 400 lbs. of evenly distributed weight
• Re-engineered automatic latching system with improved lock components for enhanced security
• Revised EPDM rubber perimeter seals and tight-fit clamps for best-in-class weather protection
• Extra-long, dual-action tailgate seal providing 13% more coverage and maintaining factory tailgate functionality
• Matte black textured finish across all components for a sleek, low-profile appearance
• Integrated water drainage system with drain tubes to keep cargo dry
• Premium rubber bumpers to protect the cab when the cover is folded upright
• Click-in rail and clamp design enabling 12% faster, no-drill installation
• Strong prop rods and re-engineered clips securely hold the cover open for easy 100% bed access

Construction & Design:

The MX4’s construction centers on durability and precision engineering. Its top panels feature a robust aluminum exterior reinforced with high-density polymer cores, delivering a 22% increase in strength over previous models. The aluminum side rails and frame provide a solid foundation capable of supporting heavy loads while resisting corrosion and wear.

The cover’s matte black finish is not only stylish but also resistant to scratches and fading, ensuring long-lasting good looks. The flush-mounted design aligns perfectly with the truck’s bed rails, creating a seamless, factory-installed appearance that enhances your Ram’s aesthetics without adding bulk.

Installation & Fitment:

The BAKFlip MX4 is engineered for straightforward, no-drill installation using a redesigned rail and clamp system that reduces installation time by 12%. This cover fits 2019–2026 Ram 1500 models with a 5'7" bed equipped with RamBox, including those with or without the Multifunction Tailgate. It is important to verify that your RamBox rails are the OEM factory silver cargo rails, as black rails are not compatible with this cover.

The cover folds toward the cab, allowing full 100% access to the truck bed without removal. Its integrated prop rods and secure latch system ensure smooth, effortless operation and reliable locking every time.

What's Included:

• BAKFlip MX4 (GEN 3) hard folding truck bed cover with matte black finish
• Precision-engineered aluminum side rails and clamps
• Integrated drain tubes and weather-resistant rubber seals
• Heavy-duty prop rods and re-engineered clips
• Installation hardware and detailed instructions

Ideal For:

The BAKFlip MX4 is perfect for Ram 1500 owners who require a durable, secure, and weatherproof truck bed cover that complements their truck’s style. It is especially suited for those who frequently haul valuable cargo, need quick and full bed access, and want a cover that integrates seamlessly with the RamBox system. Whether for work, recreation, or everyday use, the MX4 offers peace of mind and enhanced utility.

BAK Industries is a leading truck-bed cover brand known for hard folding and roll-up tonneau designs built for security and daily usability. Signature lines like the BAKFlip® series are designed to keep gear protected from weather and theft while still offering wide bed access—ideal for work trucks and performance pickups that need function without sacrificing style.