Invidia adds more heat to their 2015+ WRX / STI line up with the Gemini R400 exhaust. The quad muffler design provides an aggressive look while optimizing backpressure, increasing horsepower and torque, with a deep, menacing sound. The single-wall titanium tips, mandrel-bent SUS304 stainless piping, and TIG welding furthermore add to the exhausts beautiful appearance.
