Invidia Gemini R400 4" Quad Black Tips Cat-Back Exhaust For 15-21 Subaru WRX/STI exhaust manifolds & up-pipes Turbo Boost Pressure

Turbo Boost Pressure

and other underperforming “tuning” products

Welding and/or fabrication required for installation

eight (8) Nuts and Washers and will safely lift the rear of your 2011-2021 2WD and 4WD 8-lug Single Rear Wheel GM trucks with trailer package springs 2"

When the weather turns

Invidia Gemini R400 4" Quad Black Tips Cat-Back Exhaust For 15-21 Subaru WRX/STI exhaust manifolds & up-pipes Turbo Boost PressureThe 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