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The Gibson Dual Split cat-back rear exhaust for 2019–2022 GMC Sierra 1500 Denali (5.3L) provides a durable stainless system with 4.0-inch rolled tips exiting straight out the back. Built to lower backpressure and increase torque and horsepower (typical gains around 18–20 hp), it works with most bumpers and roll pans. Installation is bolt-on with included band clamps and requires no welding, backed by a lifetime limited warranty.
Gibson 19-22 GMC Sierra 1500 Denali 5.3L 3in/2.5in Cat-Back Dual Split Exhaust - Stainless
