BAKFlip MX4 Gen 4 Tonneau Cover for Ford F-150
Our BAKFlip MX4 Gen 4 combines the rugged durability of aluminum panels with a sleek matte finish that complements your F-150's factory bed rails. This fourth-generation folding tonneau cover features our exclusive Gen 4 latching system for easier operation and improved weather resistance.
Designed for truck owners who demand both security and versatility, the MX4 folds completely open in seconds to accommodate tall cargo. Four reinforced aluminum panels distribute weight evenly while maintaining a low-profile appearance. We engineered the MX4 Gen 4 specifically for the Ford F-150, ensuring factory-perfect fitment with no drilling required.
The integrated drain system channels water away from your bed, while heavy-duty aluminum construction protects your cargo from the elements and prying eyes. Whether you're hauling equipment to the job site or securing weekend adventure gear, the MX4 Gen 4 adapts to your needs without sacrificing bed access.
MX4 Gen 4 construction & protection details
Aluminum panel construction & matte finish
We build every MX4 Gen 4 panel with industrial-grade aluminum skins bonded to a dense FRP (Fiber Reinforced Polymer) core. This dual-layer construction delivers the strength of a hard cover with a weight-conscious design that won’t strain your truck’s suspension.
The matte black powder-coat finish coordinates perfectly with modern F-150 styling packages while resisting chips, scratches, and UV fade. Unlike glossy finishes that show every fingerprint, our textured matte surface maintains its appearance through years of daily use. The finish also reduces sun glare when you’re working in the bed.
Gen 4 locking system & security features
Our fourth-generation automatic latching mechanism represents a significant upgrade over earlier MX4 models. The Gen 4 system engages automatically when you close the tailgate, securing all four panels without manual lock operation.
Dual rotary latches at the tailgate anchor the cover firmly, while the slam latch at the cab header locks the forward panel. This three-point security system deters theft and keeps your cargo protected. The latches work with your F-150’s factory tailgate lock, so one key controls both systems.
Folding operation & bed access options
The MX4 Gen 4’s four-panel design gives you multiple access configurations. Fold up the rear panel for quick access to tools or groceries. Open two panels for mid-sized cargo. Or fold all four sections completely against the cab to restore 100% of your F-150’s bed capacity.
Each panel folds to approximately 90 degrees and stays in position without props or supports. Our integrated shock-assist system prevents panels from slamming down, protecting both the cover and your fingers during operation. The panels lock in the upright position, allowing you to drive with sections open when transporting tall items.
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Common questions about the MX4 Gen 4 for F-150
Yes, the MX4 Gen 4 installs over most spray-in bedliners including LINE-X, Rhino Linings, and Speedliner. Our clamp system adjusts to accommodate the additional thickness of spray coatings. The cover sits on the bed rails, not the bed floor, so bedliner texture doesn't affect fitment.
For best results, ensure your bedliner doesn't extend more than 1/4 inch above the factory bed rail surface. If you're planning to add a bedliner after purchasing the cover, we recommend professional installation to maintain proper rail dimensions.
The Gen 4 system features automatic engagement when you close your F-150's tailgate, eliminating manual latch operation. Earlier MX4 versions required you to manually rotate the tailgate latches to secure the cover.
Gen 4 latches also include enhanced weather sealing and corrosion-resistant components for improved durability. The mechanism integrates with your factory tailgate lock, so your existing key controls both systems. This upgrade significantly improves daily usability and security.
Yes, you can safely drive with one or more panels folded upright against the cab. The panels lock in the vertical position and won't blow down during highway driving. Many F-150 owners transport tall items this way regularly.
We recommend securing cargo with tie-downs as you would in an open bed. Keep speeds reasonable—while the cover is designed for open-panel driving, extreme speeds may stress the hinges over time. The low-profile design when closed offers better aerodynamics for fuel economy on highway trips.
We manufacture the MX4 Gen 4 in three configurations for Ford F-150 trucks: 5.5-foot bed, 6.5-foot bed, and 8-foot bed. Each version is application-specific with pre-positioned mounting points for precise fitment.
When ordering, verify your F-150's exact bed length by measuring from the inside of the bulkhead to the inside of the tailgate. Our configuration tool helps match the correct cover to your truck's year, cab style, and bed length for guaranteed compatibility.
Yes, when folded completely open, the MX4 Gen 4 provides full bed access for fifth-wheel and gooseneck towing on your F-150. The panels fold against the cab and stay securely locked in that position, allowing you to connect your trailer without removing the cover.
For frequent towers, we also offer the BAKFlip CS/F1 with integrated rail systems. However, the standard MX4 Gen 4 accommodates occasional towing needs perfectly. Just fold all four panels forward before backing up to your trailer.
The complete MX4 Gen 4 assembly weighs approximately 70-80 pounds depending on your F-150's bed length. While one person can remove the cover, we recommend a two-person lift for safety and to prevent scratching your truck's paint during removal.
The cover removes completely in under 5 minutes by releasing the clamps from your bed rails. Many owners remove their covers seasonally or when hauling oversized loads. Store the cover on edge in a garage or basement to preserve the finish and panel alignment.
We back the MX4 Gen 4 with a 3-year warranty covering defects in materials and workmanship. This includes the aluminum panels, FRP core, hinges, latching mechanisms, and mounting hardware.
The warranty covers structural failures, finish defects, and mechanical component breakage under normal use. We do not cover damage from accidents, improper installation, or modifications. Register your cover within 30 days of purchase to activate full warranty protection and access our customer support team for installation assistance.