Cat-Back Milltek Audi S4 B9 2016-2018, S5 F5 2017-2018 - without primary muffler - Quad Oval Polished tips - with sport diff

Milltek Sport Exhaust System for Audi S4 B9 / S5 F5

Is the stock sound of your Audi S4 B9 / S5 F5 leaving you wanting more? This Milltek Sport stainless steel exhaust system is the one owners ask for most: more presence, a true sound signature, and build quality that lasts.

Technical specifications

• Milltek part number: SSXAU704
• Part type: Exhaust system
• Configuration: with valves
• Detail: No primary muffler - quad oval polished stainless tips
• Tube diameter: 63.5 mm
• Outlets: 4 oval outlets
• Tip finish: polished stainless steel
• Fitting information: Models with Sport Diff and without rear chassis brace bars (visual check required) - With valves
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi S4 B9 3.0 Turbo V6 (With Sport Differential and without rear chassis brace bars, Saloon - Estate, 2016-2018)
• Audi S5 F5 3.0 V6 T (With Sport Differential and without rear chassis brace bars, Sportback, 2017-2018)

Unsure about compatibility with your vehicle? Contact us with your VIN before ordering.

Most frequently asked questions

• And what about the neighbors in the morning? The valves operate as on the original system: closed and quiet at startup or in comfort mode, fully open in sport mode.
• Fitting: the system uses the original mounting points. A workshop with the right equipment typically fits it in one to two hours.

Why choose Milltek Sport?

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

Going further

• Valved exhaust systems: how they work and should you keep them?