Downpipe designed for: Audi S3 8L Quattro 1.8 T 210 / 224PS Audi TT Quattro 8N 1.8 T 224PS Seat Leon Cupra R 1M 1.8 T 209 / 225PS (requires modification) Downpipe diameter: 3 "(76mm) Outlet diameter: 2.5" ( 63mm) Mounting flange: V-BANDDownpipe by TurboWorks, made of 100% stainless steel Downpipe dedicated to: Audi S3 8L Quattro 1.8 T 210 / 224PS Audi TT Quattro 8N 1.8 T 224PS Seat Leon Cupra R 1M 1.8 T 209 / 225PS (requires modification) With 200CPSI catalytic converter.Downpipe diameter: 3 "(76mm) Outlet diameter: 2.5" (63mm) Flange: V-BANDDownpipe by TurboWorks, is made of 100% stainless steel. Downpipe designed for: Audi S3 8L Quattro 1.8 T 210 / 224PS Audi TT Quattro 8N 1.8 T 224PS Seat Leon Cupra R 1M 1.8 T 209 / 225PS (requires modification) Downpipe diameter: 3 "(76mm) Outlet diameter: 2.5" (63mm) Mounting flange : V-BANDDownpipe by TurboWorks, is made of 100% stainless steel.