Invidia 12 Scion FRS BRZ 60mm N1 Ti Tip Cat Back Exhaust Toyota GR86, 86, FR S and Subaru BRZ Forum & Owners Community Invidia 2022+ Honda Civic Sport (2.0N A) 60mm N1 Cat Back Exhaust TI FRS BRZ GT86 Invidia N1 w Catless UEL Openflash Header Sounds. Description: N1 Exhaust Piping: 60mm Tip: 101mm Tip Style: Single Layer SS For a good balance of price and performance, Invidia offers the motorsport enthusiasts a strong line up of Invidia N1 Exhausts. Each Invidia Exhaust is constructed with high quality SUS304 Stainless Steel, CNC machined flanges, and manufactured with a polished finish. Each system features mandrel bent stainless steel piping for maximum exhaust flow and reduced back pressure. These exhausts are engineered to produce strong mid to top end power gains, as well as an increase in horsepower and torque.