The MX4's solid and robust design is flush mount, and backed by an extended 5-year warranty.
MX4's resilient infrastructure is for everyday use, featuring NEW upgrades to the prop rod clips, rails, elevator bolts, and the A-panel and B-side bumpers that provide enhanced functionality and a more complete matte-finish look and feel. BAKFlip MX4 Hard Folding Truck Tonneau Cover - 448122 America's #1 selling hard folding cover, the BAKFlip MX4, has new features, including matte-finished cab corner caps, clamps, and elevator bolts for a more streamlined look and feel.