Invidia 2015-2020 Subaru WRX / STI Gemini/R400 Single Layer Quad Stainless Steel Tip Cat-Back Exhaust




This is the Invidia Gemini Single Layer Cat-Back Exhaust System. The combination of increased piping diameter along with smooth bends relieves the exhaust with restriction and turbulence under acceleration which will increase the horsepower, and the torque, all while improving the throttle response and reducing the turbo lag.

Invidia R400 tuned muffler exhaust systems offer a rich exhaust note which enhances the natural tone of your car’s engine. Invidia’s high flow design ensures efficient exhaust flow for optimum engine performance.

Invidia’s use of high-quality stainless steel piping that is mandrel-bent to shape provides outstanding durability and appearance–all with a deep tone.

  • Piping Diameter: 76mm
  • Piping Material: 304 Stainless Steel Quad-Tip Exhaust
  • Tip Diameter: 101mm
  • Tip Material: Polished, Titanium, or Black
  • Power increase – 17hp
  • Torque Increase – 26ft-lb
  • 76mm diameter, 1.5mm thick mandrel bent SS304 Stainless Steel piping – greatly reduces the risk of cracks and breaks developing, reduces rasp and vibration.
  • Tuned mufflers optimising sound and exhaust flow
  • Cast flanges that provide optimum fitment and durability 
  • Machine welded for a fantastic appearance and uniform strength