Cat-back Milltek Audi S4 B9, S5 F5 - No Primary Muffler - Quad Jet-100 Carbon Tips - with Sport Diff

Milltek Sport Exhaust System for Audi S4 B9 / S5 F5

Replacing the stock exhaust with a Milltek Sport 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 through the rev range, with no gimmicks.

Technical specifications

• Milltek part number: SSXAU722
• Part type: Exhaust system
• Configuration: with valves
• Detail: No primary muffler - quad Jet-100 Carbon outlets
• Tube diameter: 63.5 mm
• Outlets: 4 Jet outlets of 102 mm
• Tip finish: carbon
• 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?

Milltek Sport designs and builds its exhausts in England, using mandrel-bent tubes to preserve the inside diameter and a fit developed on the vehicle. The result: a clean fitting with no modification, and a tone tuned to stay pleasant for daily driving.

Going further

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