Flowmaster 818206 American Thunder Cat-Back Exhaust System for Chevrolet, GMC (6.2)

3.5 and 2.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation An tuned 50 Series HD style chambered muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow Max increases of up to 15 hp and 13 lb-ft over the stock exhaust at the wheels Tuned performance muffler with built in resonance chamber eliminates interior drone Lifetime Limited Warranty