Downpipe by TurboWorks, made of stainless steel.Downpipe suitable for: AUDI A4, S4, RS4 2.7 biturbo b5 8d 1994-2001Dimensions: Outer diameter - 3 "(76mm) Downpipe by TurboWorks, made of stainless steel.Downpipe designed for: AUDI A4 , S4, RS4 2.7 biturbo b5 8d 1994-2001 Dimensions: Outer diameter - 3 "(76mm)