2-1/2" 304 Stainless Steel Construction: This axle-back exhaust system is constructed of 2-1/2" mandrel-bent 304 stainless steel tubing for maximum strength and durability.Dual 4-1/2" Diameter Blue Flame Exhaust Tips: Finishing off this exhaust system are dual 4-1/2" diameter blue flame 304 stainless steel clamp-on exhaust tips.Installation: Requires cutting factory exhaust. Utilizing factory style hangers this system mounts directly to factory mounting locations for a hassle-free installation.Integrated Mitered Merge Collector: A mitered merge collector is used to decrease turbulence and increase exhaust velocity resulting in increased horsepower, torque and improved throttle response.Computer-Aided Design: Utilizing state-of-the-art computer-aided design technology, this exhaust system is designed for custom, high tolerance factory fitment.MIG-Welded: 100% MIG-Welded for race-proven strength and durability.Note: Some cutting is required, see instruction sheet for further information.Emissions Disclaimer: This product does not require a CARB EO#.aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.