When searching for a high performance exhaust system for your 08-10 STi & 2011-2014 Subaru WRX Hatchback, why not go with one of the most highly recommended manufacturers in the business? Invidia's full 76mm (3 inch) mandrel bent stainless steel piping optimizes flow and minimizes turbulence with a unique exhaust path that deletes all unnecessary bends, unleashing horsepower that would normally be restricted. The midpipe features a flex joint for easy installation as well as an inline resonator giving this system an aggressive yet deep and subtle touring style tone, suited better for daily driven street cars. All Invidia N1 exhaust systems for the STI include necessary hardware and gaskets for installation. N1 Exhaust systems vary depending on body style, please choose accordingly below.