Turbo Downpipe 80mm Milltek Audi RS6 C8, RS7 C8, S8 D5 - 80 mm with Decat + GPF Bypass - for Stock Exhaust

Decat downpipe Milltek Sport for Audi RS6 C8 / RS7 C8 / S8 D5

The downpipe is the first restriction on a tuned turbo engine. This Milltek Sport decat downpipe for Audi RS6 C8 / RS7 C8 / S8 D5 frees up exhaust flow right after the turbo, for faster spool and a stronger boost build-up.

Technical specifications

• Milltek reference: SSXAU871
• Part type: Decat downpipe
• Details: 80 mm large-bore downpipe with decat and GPF bypass
• Tube diameter: 80 mm
• Installation information: With heat shields, factory line fitment, ECU remap
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi RS6 C8 4.0 V8 twin-turbo (2019-2025, with DPF)
• Audi RS7 C8 4.0 V8 twin-turbo (2019-2025, with DPF)
• Audi S8 D5 4.0 TFSI 571 hp (Sedan, 2020-2025, with DPF)

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

Frequently asked questions

• Does it require ECU tuning? Yes. A proper Stage 2 ECU map is essential to unlock the gain and avoid a check engine light related to the lambda sensors. It is the question buyers ask most, and the answer is always the same.
• What about the technical inspection? A decat downpipe will not pass the emissions inspection. This product is intended for motorsport use only.
• Line compatibility: this downpipe connects to the factory exhaust line.

Why choose Milltek Sport?

A benchmark among European tuners, Milltek Sport tunes each of its systems directly on the vehicle. Mandrel bending, careful welds and aerospace-grade stainless steel deliver an exhaust that lasts and sounds right.

Going further

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

For closed-circuit motorsport use only. Use on public roads is not permitted.