Invidia Gemini R400 Cat Back Exhaust w/ Stainless Steel Tip 2015-2021 WRX / 2015-2021 STI

This is the Invidia Gemini Single Layer Cat-Back Exhaust System. The Gemini is among one of the most popular cat-back exhaust systems available as they make for an excellent upgrade over the OEM exhaust system to improve the performance and the sound. The combination of increased piping diameter along with smooth bends relieves the exhaust with restriction and turbulence under acceleration which will increase the horsepower, the torque, all while improving the throttle response and reducing the turbo lag.

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