Invidia specifically designed the N1 series of exhausts for die hard motorsports enthusiasts. Made from high quality T304 stainless steel with CNC-machined flanges, the Invidia N1 exhaust system for the 93-98 Toyota Supra features mandrel bends and a mirror polished finish. The Invidia N1 system is designed produce horsepower and torque gains in the mid to high RPM. This stem features a 101mm tip and 76mm pipe diameter.