Catback Milltek Audi S4 B9, S5 F5 - ECE - with primary muffler - Quad GT100 Cerakote Black Outlets - no sport diff.

Milltek Sport Exhaust System for Audi S4 B9 / S5 F5

Fitting a Milltek Sport exhaust in place of the factory system brings back the character that the factory setup holds back in your Audi S4 B9 / S5 F5: a rounder tone at idle that opens up cleanly through the rev range, with no artifice.

Technical specifications

• Milltek part number: SSXAU641
• Part type: Exhaust system
• Configuration: with valves
• Details: ECE approved - with primary muffler - quad GT100 black Cerakote outlets
• Pipe diameter: 63.5 mm
• Outlets: 4 GT100 outlets, 100 mm
• Tip finish: black Cerakote (high-temperature ceramic)
• Fitting information: Models without sport diff - with valves
• Material: aerospace-grade stainless steel
• Homologation: ECE / EC approved
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi S4 B9 3.0 Turbo V6 (without sport differential, sedan and wagon, 2016-2018)
• Audi S5 F5 3.0 V6 T (without sport differential, Sportback, 2017-2018)

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

Most frequently asked questions

• What about the neighbors in the morning? The valves operate as on the factory system: closed and quiet at startup or in comfort mode, fully open in sport mode.
• Homologation: this system is ECE / EC approved, a real advantage for driving with peace of mind and passing the French contrôle technique (roadworthiness inspection).
• Installation: the system uses the factory mounting points. An equipped repair shop typically fits it in one to two hours.

Why choose Milltek Sport?

The feedback we hear most from customers: the quality of fit and a deep tone that is present but never harsh. This is the Milltek Sport signature, from the British manufacturer specialized in stainless steel exhausts.

Going further

• Valved exhaust systems: how do they work, and should you keep them?
• Exhaust systems and the contrôle technique in France