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The Gibson Dual Extreme cat-back exhaust for 2015–2019 GMC Sierra 2500 HD 6.0L is a stainless, bolt‑on system that positions angled outlets behind the rear tires for bold styling and an assertive exhaust tone. Dyno‑tuned performance yields typical gains of 15–20 hp while the muffler produces a mean street sound. Polished slash‑cut tips, mandrel‑bent tubing and included hardware deliver professional looks and easy installation; backed by a Lifetime Limited Warranty.
Gibson 15-19 GMC Sierra 2500 HD Base 6.0L 3.5in/3in Cat-Back Dual Extreme Exhaust - Stainless
