Introducing the all-new BAKFlip MX4, featuring heavy-duty aluminum matte finish panels that offer superior UV and scratch resistance, and an enhanced premium density foam core. The MX4 is the upgrade to the G2 aluminum series, equipped with upgraded latch housing components, and an all-new integrated tailgate seal that allows the cover to be closed with the tailgate in the closed or open position. This heavy-duty, all-season truck bed cover is designed to perform in the most extreme conditions. The MX4's resilient infrastructure is designed for everyday use, with upgraded components that provide enhanced resistance to the elements without compromising its sleek, low-profile look and feel. The MX4's solid and robust design is flush mount, and backed by an extended 5-year warranty.\nBAKFlip MX4 Hard Folding Truck Bed Cover - Matte Finish - 2019-2021 (New Body Style) GMC Sierra (with CarbonPro Bed) 5' 9" Bed\nBefore purchase please verify if you have New Body Style or Limited (GMC) on 2019 Sierra 1500 - This part is for the New Body StyleNOTE: Will fit with CarbonPro Bed\n2019-2021 GMC Sierra 1500 69.9 Bed With CarbonPro Bed