Cat-back Milltek Audi RS4 B8 4.2 FSI V8 450 hp 2012-2015 - With primary mufflers and non-resonated

Milltek Sport exhaust system for Audi RS4 B8

Not happy with the stock sound of your Audi RS4 B8? This Milltek Sport stainless steel exhaust is the most requested option among owners: more presence, a true sound signature and build quality that lasts.

Technical specifications

• Milltek part number: SSXAU337
• Part type: Exhaust system
• Configuration: non-resonated (no resonator), with valves
• Detail: With primary mufflers and no resonator
• Tube diameter: 70 mm (2.75 in.)
• Exhaust tips: original exhaust tips retained
• Installation information: With active valves
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi RS4 B8 4.2 FSI V8 450 hp (Quattro, Wagon, 2012-2015)

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

Most frequently asked questions

• Resonated or non-resonated? This version is non-resonated (no resonator): it is the most expressive, with more crackle on throttle lift-off. On the other hand, a slight drone may appear at certain engine speeds on long trips. If you do a lot of highway driving, compare it with the resonated version.
• And what about the neighbors in the morning? The valves are controlled as on the original system: the exhaust stays closed and quiet at startup or in comfort mode, and fully open in sport mode.
• Installation: the system uses the original mounting points. A well-equipped repair shop typically fits it in one to two hours.

Why choose Milltek Sport?

Owner feedback most often points to fit quality and a deep tone that is present but never harsh. That is the signature of Milltek Sport, a British manufacturer specializing in stainless steel exhausts.

Further reading

• Resonated or non-resonated cat-back exhaust: which one should you choose for your car?
• Valved exhaust systems: how do they work and should you keep them?