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The aFe Rebel Series cat-back exhaust for 2009–2018 GM Silverado/Sierra 1500 (also notes Silverado LD/Sierra Limited 2019 fitments) uses 3" into dual 2½" mandrel-bent 409 stainless tubing and a high-flow muffler to increase flow and sound. Measured gains are about +14 HP and +17 lb-ft of torque on aFe’s dyno; polished dual tips exit ahead of the rear passenger tire and installation uses supplied hardware for a bolt-on fit.
aFe Rebel Series 3in-2.5in 409 SS Cat-Back Exhaust 09-18 GM Silverado/Sierra 1500 V6-4.3L / V8-4.6L
