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The Gibson Dual Split cat-back exhaust for 2014–2018 GMC Sierra 1500 5.3L is a stainless system with dual tips exiting straight out the back for a balanced, aggressive appearance. It reduces backpressure to support typical gains around 18–20 horsepower and produces a throaty sound that can be louder while towing. The baffled Superflow muffler minimizes interior drone and the kit includes hardware and factory‑style hangers for bolt‑on installation.
Gibson 14-18 GMC Sierra 1500 Base 5.3L 3in/2.25in Cat-Back Dual Split Exhaust - Stainless
