Downpipe designed for: Audi A4 A5 Q5 2.0 TFSIDownpipe by TurboWorks, made of 100% stainless steel. Inlet diameter: 76mm Outlet diameter: 65mm Downpipe designed for: Audi A4 A5 Q5 2.0 TFSIDownpipe by TurboWorks, is made of 100% stainless steel. Inlet diameter: 76mm Outlet diameter: 65mm