OBX Performance Header 04-06 Mitsubishi Lancer Ralliart MiVEC 4-1 (1pc.) SOHC Dyno tested Track Proven at low end and top speed to increase torque, horsepower. Precision mandrel-bend to enhance exhaust gas flow Precision Computer CNC machined flanges with DUAL-TIG welded construction Value Added Direct Bolt On, Weld On Set Up with Gaskets included as shown Backed by OBX Limited Lifetime warranty from manufacturer defects OBX Genuine Products Design and Quality of OBX U.S.A