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The Gibson Dual Extreme cat-back exhaust for 2017 GMC Sierra 1500 5.3L is a stainless bolt‑on system that angles dual outlets behind the rear tires for aggressive styling and a powerful exhaust tone. Dyno‑tuned performance typically yields 15–20 hp gains. The Superflow muffler produces a mean sound while mandrel‑bent tubing and polished tips provide durable, polished looks; includes hardware for an easy, no‑weld installation and a Lifetime Limited Warranty.
Gibson 2017 GMC Sierra 1500 Base 5.3L 3in/2.25in Cat-Back Dual Extreme Exhaust - Stainless
