Downpipe Milltek Audi RS4 B9 2.9 V6 T 2019-2025, RS5 B9 2.9 V6 T 2019-2025 with DPF - Decat Pipe + DPF Bypass

Milltek Sport decat downpipe for Audi RS4 B9 / RS5 B9

The downpipe is the first restriction on a tuned turbo engine. This Milltek Sport decat downpipe for Audi RS4 B9 / RS5 B9 opens the exhaust right after the turbo, for faster spool-up and a more immediate boost build-up.

Technical specifications

• Milltek part number: SSXAU820
• Part type: Decat downpipe
• Details: Large diameter decat downpipe + DPF bypass
• Tube diameter: 70 mm (2.75 in)
• Fitting information: With heat shields
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi RS4 B9 2.9 V6 T (Avant, 2019-2025, with DPF)
• Audi RS5 B9 2.9 V6 T (Coupe, 2019-2025, with DPF)
• Audi RS5 B9 2.9 V6 T (Sportback, 2019-2025, with DPF)

Not sure about compatibility with your vehicle? Contact us with your VIN before ordering.

Our most frequently asked questions

• Is an ECU tune required? Yes. A suitable Stage 2 map is essential to make use of the gain and avoid a check engine light linked to the lambda sensors. It is the question buyers ask most often, and the answer is always the same.
• What about the technical inspection? A decat downpipe does not pass the emissions test. This product is intended for motorsport use only.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhausts in England, using mandrel-bent tubing to preserve the internal diameter and a fit developed on the vehicle. The result: a clean installation without modification, and a sound tuned to stay pleasant for everyday driving.

Further reading

• Downpipe: decat or high-flow catalytic converter for your Stage 2?
• Exhaust system and technical inspection in France

Product intended exclusively for motorsport use, on closed circuits. Use on public roads is not permitted.