Milltek Cat-back Audi S6 C7 2012-2018, S7 4G 2012-2018 - with primary muffler, resonated - Quad GT100 Black Cerakote tips

Milltek Sport Exhaust System for Audi S6 C7 / S7 4G

On the Audi S6 C7 / S7 4G, the original exhaust is designed for quietness and regulations. This Milltek Sport stainless steel exhaust system brings the engine's voice back with a refined sound that is full and deep, the kind that built the reputation of this British brand.

Technical specifications

• Milltek part number: SSXAU447
• Part type: Exhaust system
• Configuration: resonated (with resonator), with valves
• Details: With primary and resonator mufflers, quad GT100 black Cerakote tips
• Tube diameter: 70 mm (2.75 inches)
• Outlets: 4 GT100 outlets, 100 mm
• Tip finish: black Cerakote (high-temperature ceramic)
• Fitting information: With valves. Note: some 2016 and later models require an extension of the valve wiring on a rear muffler.
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi S6 C7 4.0 TFSI (Quattro, 2012-2018)
• Audi S7 4G 4.0 TFSI (S-tronic, Quattro, Sportback, 2012-2018)

Not sure about compatibility with your vehicle? Contact us with your VIN (chassis number) before ordering.

Our most frequently asked questions

• Motorway drone? It is the number one fear on forums. This version keeps a resonator: the sound stays full under acceleration, but the system remains unobtrusive at steady cruising speed, ideal for daily driving.
• What about the neighbors in the morning? The valves are controlled as on the original: closed and quiet on startup or in comfort mode, fully open in sport mode.
• Installation: 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 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 with no modification needed, and a tone tuned to stay pleasant for everyday driving.

Going further

• Resonated or non-resonated cat-back exhaust: which one for your car?
• Valved exhaust systems: how do they work and should you keep them?