Downpipe designed for: Audi TT S3 1.8T Seat Leon 1.8T Downpipe by TurboWorks, made of 100% stainless steel. Inlet diameter: 76mm Outlet diameter: 63mmDownpipe intended for: Audi TT S3 1.8T Seat Leon 1.8T The downpipe by TurboWorks, is made of 100% stainless steel. Inlet diameter: 76mm Outlet diameter: 63mm