Invidia 2009+ WRX/STi Sedan G5 Titan Titanium Cat-Back Exhaust

High-performance cat-back exhaust for tuner cars. Reduces bends, uses larger diameter piping for reduced restriction, more aggressive tone, and improved throttle response, torque, and horsepower. Q300 exhaust systems feature a flat bottom muffler for improved aerodynamics, continuous piping, and Advantex material for free-flow exhaust with optimized back pressure, leading to greater horsepower, torque gains, and a rich, deep sporty sound. Made with SUS304 polished stainless steel piping, mandrel bending, CNC machine-made flanges, robot TIG welding, and double-wall polished stainless steel or titanium tips.