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The Gibson Dual Extreme cat-back exhaust for 2014–2018 GMC Sierra 1500 Denali 6.2L is a stainless bolt‑on system that angles outlets behind the rear tires for bold presence and a commanding exhaust note. Dyno‑tuned for street gains, it typically produces 15–20 hp increases. The Superflow muffler delivers an aggressive tone with controlled drone, while polished tips, mandrel‑bent tubing and included hardware simplify installation and provide a finished look.
Gibson 14-18 GMC Sierra 1500 Denali 6.2L 3.5in/2.25in Cat-Back Dual Extreme Exhaust - Stainless
