Invidia N1 60mm Dual Catback Exhaust Titanium Tip For Scion FR S & for SCION FRS SUBARU BRZ Invidia Mid Pipe *DAMAGED* Proper Parts Co Invidia N1 Catback Exhaust (FRS BRZ GT86) YouTube Toyota GT86 BRZ FRS 12 Invidia 60mm N1 Polished Tips Cat Back Exhaust. 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.