Introducing Flowmaster's new line of Flow FX Cat-back exhaust systems for the 2014-2019* (*Classic body) Chevrolet Silverado 1500 and GMC Sierra 1500 Crew Cab and Double Cab models with 4.3L and 5.3L engine. This Flow FX system is perfect for the person looking for a moderate to aggressive exterior and interior sound level with all of the performance benefits that you would expect from Flowmaster. Features include 409S stainless steel mandrel-bent tubing flowing into a Flow FX straight-through performance muffler for maximum power and a deep aggressive sound. The dual 2.50-inch tailpipes are finished off with large 4.00-inch black ceramic coated 304 stainless steel tips exiting in front of the rear passenger tire for that muscle truck look. Designed for easy installation, this system includes all necessary parts, hardware and detailed instructions.