Flowmaster's Outlaw Axle-back exhaust system features stainless steel construction with 3.00-inch mandrel bent tubing and high-performance mufflers to maintain a pleasant tone inside while providing a deep moderate/aggressive performance tone outside the Corvette. The system finishes with 304S stainless steel 4.00-inch quad-tips giving your C7 the performance look your car deserves and the sound everyone loves to hear.