Cat-Back Milltek Audi S5 F5 3.0 V6 Turbo/3.0 V6 T 2017-2018: With Primary Muffler, Quad GT100 Cerakote Black Tips

Milltek Sport Exhaust System for Audi S5 F5

Replacing the original exhaust with a Milltek Sport system brings back the character that the factory setup suffocates in your Audi S5 F5: a rounder tone at idle that opens up cleanly as the revs climb, without gimmicks.

Technical Specifications

• Milltek Part Number: SSXAU1121
• Product Type: Exhaust System
• Configuration: With valves
• Details: With primary muffler, quad GT100 black Cerakote tips
• Tube Diameter: 63.5 mm
• Outlets: 4 GT100 outlets, 100 mm each
• Tip Finish: black Cerakote (high-temperature ceramic)
• Fitting Information: Models with Sport Differential, with valves
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (United Kingdom)

Compatible Vehicles

• Audi S5 F5 3.0 V6 Turbo (with Sport Differential and rear chassis reinforcement bars, Coupe, 2017-2018)
• Audi S5 F5 3.0 V6 T (with Sport Differential and 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 original system: closed and discreet at start-up or in comfort mode, fully open in sport mode.
• Installation: the system uses the original mounting points. A properly equipped repair shop typically fits it in one to two hours.

Why Choose Milltek Sport?

Milltek Sport designs and manufactures its exhausts in England, using mandrel-bent tubing to preserve the inner diameter and a fit developed on the vehicle. The result: a clean installation, no modification needed, and a tone tuned to stay pleasant for everyday driving.

Further Reading

• Valved Exhaust Systems: How They Work and Whether to Keep Them