Invidia [15-21 WRX/STI] Q300 Single Cat Back Exhaust | HS15SW4G3S Performance ECU Turbo Type cat-back exhaust system

Turbo Type cat-back exhaust system designed for EVO 8 / EVO 9

5 cm M6 bolts for installation

Integrated 1/8” NPT port for coolant temperature sensor

Manufacturing Standard

Invidia [15-21 WRX/STI] Q300 Single Cat Back Exhaust | HS15SW4G3S Performance ECU Turbo Type cat-back exhaust systemThe flat bottom shaped muffler design results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free flow exhaust with optimized back pressure, giving greater horsepower, torque gains and a rich deep sporty sound. The use of SUS304 polished stainless steel piping, mandrel bent to shape, state of the art CNC machine made flange, Robot TIG