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The Gibson Dual Extreme cat-back exhaust for 2019–2022 GMC Sierra 1500 Denali (5.3L) offers an extreme look and a powerful exhaust tone with polished 4.0-inch rolled stainless tips. Dyno-tested for gains averaging 15–20 horsepower, it features mandrel-bent stainless tubing and a baffled muffler to minimize interior drone. The bolt-on system includes stainless band clamps and installs without welding, backed by a lifetime limited warranty.
Gibson 19-22 GMC Sierra 1500 Denali 5.3L 3in/2.5in Cat-Back Dual Extreme Exhaust - Stainless
