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The Gibson Dual Extreme cat-back exhaust for 2019–2022 GMC Sierra 1500 (4.3L–5.3L) is a stainless system with polished 4.0-inch rolled tips and bolt-on installation. Tuned for a bold, aggressive tone, it includes stainless band clamps and factory-style hangers. Gibson’s Dual Extreme promises noticeable street-oriented power gains—advertised at roughly 15–20 horsepower—backed by a lifetime limited warranty.
Gibson 19-22 GMC Sierra 1500 4.3L-5.3L Pickup 3in/2.5in Cat-Back Dual Extreme Exhaust - Stainless
