Turbo Downpipe Milltek Audi RS4 B9 2018-2025, RS5 B9 2017-2019, RS5 B9.5 2019-2025 - Decat

Milltek Sport decat turbo downpipe for Audi RS4 B9 / RS5 B9 / RS5 B9.5

The turbo downpipe is the first restriction in a tuned turbo engine. This Milltek Sport decat turbo downpipe for Audi RS4 B9 / RS5 B9 / RS5 B9.5 frees up the exhaust right after the turbo, for faster spool-up and a stronger boost build.

Technical specifications

• Milltek part number: SSXAU816
• Part type: Decat turbo downpipe
• Detail: Large-diameter decat downpipe
• Tube diameter: 76.2 mm (3 in)
• Fitting information: With heat shields
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi RS4 B9 2.9 V6 T (Wagon, 2018-2025, no DPF)
• Audi RS5 B9 2.9 V6 T (Coupe, 2017-2019, no DPF)
• Audi RS5 B9 2.9 V6 T (Sportback, 2018-2019, no DPF)
• Audi RS5 B9.5 2.9 V6 T (Coupe, 2019-2025, no DPF)
• Audi RS5 B9.5 2.9 V6 T (Sportback, 2019-2025, no DPF)

Not sure it fits your vehicle? Contact us with your VIN before ordering.

Most frequently asked questions

• Is a remap required? Yes. A suitable ECU map (Stage 2) is essential to get the full benefit of the gain and to avoid an engine warning 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 will not pass the emissions test. This product is intended for motorsport use only.

Why choose Milltek Sport?

What comes up most often in user feedback is the fit quality and a deep tone, present but never harsh. That is the Milltek Sport signature, from the British manufacturer specializing in stainless steel exhausts.

Further reading

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

This product is intended exclusively for motorsport use on closed circuits. Use on public roads is not permitted.