Cat-Back Milltek Audi RS4 B7 4.2 FSI V8 420hp 2006-2008 - ECE Homologated - resonated - Satin Sheen Black Oval Tips

Milltek Sport Exhaust System for Audi RS4 B7

Replacing the original system with a Milltek Sport exhaust brings back the character that the stock setup mutes on your Audi RS4 B7 engine: a rounder tone at idle that opens up cleanly through the rev range, without gimmicks.

Technical specifications

• Milltek part number: SSXAU221
• Part type: Exhaust system
• Configuration: resonated (with resonator), with valves
• Detail: ECE homologated - With resonator - Satin Sheen Black oval tips
• Tube diameter: 60 mm
• Tips: Special 224 Special 225
• Tip finish: black Cerakote (high-temperature ceramic)
• Fitting information: With valves
• Material: aerospace-grade stainless steel
• Homologation: ECE / EC homologated
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi RS4 B7 4.2 FSI V8 420 hp (Quattro, Saloon, Avant, Cabriolet, 2006-2008)

Not sure about compatibility with your vehicle? Contact us with your VIN (chassis number) before ordering.

Frequently asked questions

• Highway drone? It's the number one concern on forums. This version keeps a resonator: the sound stays full under acceleration, but the system stays calm at steady cruising speed, ideal for everyday driving.
• And the neighbors in the morning? The valves are controlled as on the original: system closed and quiet on start-up or in comfort mode, fully open in sport mode.
• Homologation: this system is ECE / EC homologated, a real advantage for driving with peace of mind and passing the French contrôle technique.
• Fitting: the system uses the original mounting points. A workshop typically fits it in one to two hours.

Why choose Milltek Sport?

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

Go further

• Resonated or non-resonated cat-back exhaust: which one for your car?
• Valved exhaust system: how does it work and should you keep the valves?
• Exhaust system and contrôle technique in France