Catback Milltek Audi S4 B9, S5 F5 - No primary muffler - quad GT100 blued titanium tips - without sport diff.

Milltek Sport Exhaust System for Audi S4 B9 / S5 F5

Replacing the original exhaust with a Milltek Sport exhaust system brings back the character that the factory engine of your Audi S4 B9 / S5 F5 holds back: a rounder tone at idle that opens up clearly as the revs climb, with no artificial effects.

Technical specifications

• Milltek part number: SSXAU653
• Part type: Exhaust system
• Configuration: with valves
• Details: No primary muffler - quad GT100 blued titanium tips
• Tube diameter: 63.5 mm
• Tips: 4 GT100 tips, 100 mm
• Tip finish: blued titanium (heat tint effect)
• Fitment information: Models without sport diff - with valves
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (United Kingdom)

Compatible vehicles

• Audi S4 B9 3.0 Turbo V6 (Without sport differential, Sedan - 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 chassis number (VIN) before ordering.

Our most frequently asked questions

• What about the neighbors in the morning? The valves are controlled as on the original system: the line stays closed and quiet at startup or in comfort mode, and fully open in sport mode.
• Fitting: the system uses the original mounting points. A shop with the right equipment usually fits it in one to two hours.

Why choose Milltek Sport?

The most common feedback from users points to fit quality and a deep tone that is present but never harsh. This is the hallmark of Milltek Sport, a British manufacturer specializing in stainless steel exhausts.

Further reading

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