BAKFlip MX4 (GEN 3) Tonneau Cover, BAKFlip MX4 Tonneau CoverHigh-density polymer-reinforced aluminum top panels are 22 percent stronger than the original MX4, Redesigned Rail And Clamp Design Combine For An Easier-Than-Ever- No-Drill Installation, Re-engineered automatic latching panels offer improved security over the GEN 2 design, Heavy-Duty Aluminum Panel And Rail Construction Supports More Than 400Lbs. Of Weight, Re-engineered perimeter seals and tight-fit clamps for superior weather protection, Premium rubber bumpers protect the cab when folded into the upright position, Weather-Resistant Rubber Seals And Plastic End Caps For Superior Protection, Refined Latch System Reduces Cable Fatigue For Smooth Effortless Operation, Extra-long, dual-action tailgate seal available on most applications, Premium Rubber Bumpers Protect The Cab From Contact With The Cover, 12 percent quicker installation with all-new click-in design, Extra-Strong Prop Rods Firmly Secure Cover In Open Position, Cov