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The Gibson Dual Sport cat-back exhaust for 2014–2018 GMC Sierra 1500 5.3L is a stainless, bolt‑on system that exits behind the rear tire to preserve towing clearance and add visual flair. Dyno testing supports typical gains of 18–20 hp and 15–20 lb‑ft of torque while producing a deep, authoritative note with minimal cabin drone. Polished round slash‑cut tips, mandrel‑bent tubing and included hardware deliver professional looks and an easy install; backed by a Lifetime Limited Warranty.
Gibson 14-18 GMC Sierra 1500 Base 5.3L 3in/2.25in Cat-Back Dual Sport Exhaust - Stainless
