3" 409 Stainless Steel Construction: This axle-back exhaust system is constructed of 3" mandrel-bent 409 stainless steel tubing for maximum strength and durability. Aggressive Sound: This system produces an aggressive sound unleashing all available horsepower and torque. Installation: Some cutting may be required, see instruction sheet for further information. Utilizing factory style hangers this system mounts directly to factory mounting locations for a hassle-free installation. 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.