The 04-07 Subaru STI Invidia Q300 Cat-back Exhaust is made from polished SUS304 stainless steel that is mandrel bent for maximum flow and reduced back pressure. The flat bottom shaped muffler design results in improved high speed aerodynamic performance. The Q300 exhaust is engineered with an Advantex material resulting in excellent free-flow exhaust with optimized back pressure, giving greater horsepower and torque gains with a rich sporty sound.
- 04-07 Subaru STI Invidia Q300 Cat-back Exhaust System
- 76mm Piping
- 110mm Tips