3" 304 Stainless Steel Construction: This system is constructed of 3" mandrel-bent 304 stainless steel tubing for maximum strength and durability.Installation: Utilizing a hanger and factory style flanges, this system is a direct bolt-on system, which requires no cutting or modifications 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.Emissions Disclaimer: This product does not require a CARB EO#.aFe POWER exhaust systems are engineered and manufactured in our Corona, California facility.