The new Flowmaster® American Thunder® cat-back exhaust system for the 2019-2023 GM 1500 (new body style) trucks with 5.3L engine is perfect for the person looking for an aggressive sound level outside the truck, with a moderate interior tone and the performance benefits you would expect from Flowmaster. This emissions-legal bolt-on system fits all Crew Cab and Double Cab models with 5.5 and 6.5-ft long beds with factory dual exhaust option. Features include flex joint, mandrel-bent 3.00 in. stainless steel tubing flowing into a Super 40® Series muffler, dual 2.50 in. mandrel-bent stainless tailpipes that are finished off with quad 4.00 in. black ceramic coated stainless steel tips exiting out under the factory exhaust bezels. Designed for an easy fit, this system includes all necessary parts and hardware for an easy at home installation. Notes: Fits 2019-2020 Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 5.3L engine. Fits models with 5.5 and 6.5-ft long beds with factory dual exhaust option.