Downpipe suitable for: AUDI A3 S3 QUATTRO 2.0TFSIDownpipe diameter: 3 "(76mm) to 2.5" (63mm) Mounting flange: V-BAND 3 "(76mm) TurboWorks downpipe is made of 100% stainless steel. Downpipe is designed to: AUDI A3 QUATTRO S3 2014 + Diameter: 3 "(76mm) Mounting flange: 3" V-BAND to 2.5 "(76-63mm) Downpipe company TurboWorks, is made in 100% stainless steel stainless steel. for: AUDI A3 S3 QUATTRO 2.0TFSI Downpipe diameter: 3 "(76mm) to 2.5" (63mm) Mounting flange: V-BAND 3 "(76mm) TurboWorks downpipe is made of 100% stainless steel.