Invidia 60mm (101mm tip) N1 Cat back Exhaust Fits 88 91 CRX EF8 eBay Invidia N1 60mm Dual Catback Exhaust Titanium Tip For Scion FR S & for Toyota GR86, 86, FR S and Subaru BRZ Forum & Owners Community Invidia N1 N2 Exhaust BRZ FRS 86 (13 21) Polished or Titanium Burnt Bl Invidia N1 60mm Dual Catback Exhaust Titanium Tip For Scion FR S & for Invidia N1 with silencer on a BRZ FRS GT86 YouTube. 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.