The Gibson Super Truck cat-back for 2015–2018 Chevrolet Silverado 1500 LS 5.3L is an aluminized exhaust tuned for a loud, deep race-rumble tone with dual tailpipes exiting ahead of the rear tires. Dyno-tested gains typically average 15–18 hp with 15–20 lb-ft torque increases. The clampless sport tips and Superflow muffler offer an aggressive sound; bolt-on installation requires no welding. Not recommended for towing.
Gibson 15-18 Chevrolet Silverado 1500 LS 5.3L 3in/2in Cat-Back Super Truck Exhaust - Aluminized