Injen 15-20 Subaru STI Cat Back Exhaust w/ Quad Titanium Tips - SES1207TT fits_2004-2006`Pontiac`GTO Retains the Factory O2 Sensor

Retains the Factory O2 Sensor

This system features high-flow 304 stainless steel mufflers and produces an aggressive sound

torque for towing

0" Design: Reduces back pressure and improves scavenging for gains in horsepower

This limited edition cap cover available in both sleek Black Carbon Fiber and vibrant Red Fiber represents the pinnacle of sophisticated design and cutting-edge engineering

Injen 15-20 Subaru STI Cat Back Exhaust w/ Quad Titanium Tips - SES1207TT fits_2004-2006`Pontiac`GTO Retains the Factory O2 SensorThe Injen Performance Cat Back Exhaust System for the 2015 2021 Subaru WRX and WRX STI was designed from the ground up to compliment the aggressive styling and blistering performance of these sporty sedans. Our custom dual muffler design hones the tone of the engine into an ear pleasing symphony. Purposefully delivering a crisp, clean, deep rumble at idle and an aggressive roar when you're pushing the limits. Manufactured from only the highest grade