Catalyst Replacement Pipes (Audi B9 RS4/RS5)

Large Bore Downpipe & Decat (Audi B9 RS4/RS5)

Large Bore Downpipes with Hi Flow Cats (Audi B9 RS4/RS5)

Hi-Flow Sports Cat & GPF Bypass (Audi B9 RS4/RS5)

Must be fitted with the Milltek Sport cat-back system and requires a Stage 2 ECU remap TIP STYLE = PIPE (MM) = 63.5 PIPE (INCHES) = 2.5 EC-APPROVED? = No EC-APPROVED? = No RACE SYSTEM = Yes...