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Gibson Dual Extreme cat-back exhaust for 2020–2022 Chevrolet Silverado and GMC Sierra 2500 HD 6.6L Crew Cab (Long Bed) targets the enthusiast seeking aggressive looks and a powerful exterior tone with calm cabin sound. The bolt-on stainless system includes mandrel-bent tubing, a Superflow muffler and polished stainless tips, and is dyno-tested for average gains around 15–20 hp. No welding is required and the system is backed by a lifetime limited warranty.
Gibson 20-22 Silverado/GMC Sierra 2500 HD 6.6L Crew Cab (Long Bed) Cat-Back Dual Extreme Exhaust
