Cat-back Milltek Audi S4 B9, S5 F5 - ECE - with primary muffler - Quad Oval Polished Outlets - with sport diff.

Milltek Sport Exhaust System for Audi S4 B9 / S5 F5

Is the factory 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 real sound signature and build quality that lasts.

Technical specifications

• Milltek part number: SSXAU698
• Part type: Exhaust system
• Configuration: with valves
• Details: ECE homologated - With primary muffler - Quad oval polished stainless steel outlets
• Tube diameter: 63.5 mm
• Outlets: 4 oval outlets
• Tip finish: polished stainless steel
• Fitting information: Models with sport differential and without chassis reinforcement bars (visual check required) - With valves
• Material: aerospace-grade stainless steel
• Homologation: ECE / EC homologated
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi S4 B9 3.0 Turbo V6 (With sport differential and without rear chassis reinforcement bars, Saloon / Estate, 2016-2018)
• Audi S5 F5 3.0 V6 T (With sport differential and without rear chassis reinforcement bars, Sportback, 2017-2018)

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

Frequently asked questions

• What about the neighbors in the morning? The valves are controlled as on the factory system: closed and discreet on startup or in comfort mode, fully open in sport mode.
• Homologation: this system is homologated (ECE / EC), a real plus for driving with peace of mind and passing the technical inspection.
• Fitting: the system uses the factory mounting points. A workshop with the right equipment usually fits it in one to two hours.

Why choose Milltek Sport?

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

Going further

• Valved exhaust systems: how they work and should you keep them?
• Exhaust systems and the technical inspection in France