Invidia Gemini R400 4" Quad Black Tips Cat-Back Exhaust For 15-21 Subaru WRX/STI exhaust manifolds & up-pipes Constructed from heavy-gauge aluminized steel

Constructed from heavy-gauge aluminized steel with mandrel-bent tubing

Welding and/or fabrication required for installation

Turbo Boost Pressure

Comes standard with black powder coat finish and laser cut RT logo

Invidia Gemini R400 4" Quad Black Tips Cat-Back Exhaust For 15-21 Subaru WRX/STI exhaust manifolds & up-pipes Constructed from heavy-gauge aluminized steelThe Invidia R400 Gemini single layer quad black tip catback exhaust for your Subaru WRX STI is among one of the most popular catback exhaust systems available as they make for an excellent upgrade over the OEM exhaust system. The combination of increased piping diameter along with smooth bends relieves the exhaust restriction and turbulence under acceleration which will increase the horsepower and torque. This will also help improve the throttle