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The BAKFlip MX4 (GEN 3) hard folding tonneau cover in matte finish is a strengthened evolution of the MX4, specified for 2019–2026 GMC Sierra with CarbonPro bed (5'9" bed). It uses aluminum top panels with high-density polymer cores for increased strength, a re-engineered auto-latch and lock system, improved perimeter seals and a flush, low-profile appearance while folding toward the cab for full bed access.
BAK 19-21 GM Sierra 1500 (Carbon Pro Bed) 5ft 8in Bed BAKFlip MX4 Matte Finish
