Cat-Back Milltek Audi S8 D4 4.0 TFSI 2013-2018 - With Primary Muffler, Resonated - Quad GT100 Cerakote Black

Milltek Sport exhaust system for Audi S8 D4

On the Audi S8 D4, the factory exhaust is designed for quiet operation and regulatory compliance. This Milltek Sport stainless steel exhaust system brings the engine's voice back with a refined, full and deep tone, the one that built the reputation of this British brand.

Technical specifications

• Milltek part number: SSXAU464
• Part type: Exhaust system
• Configuration: resonated (with resonator), with exhaust valves
• Detail: With primary and resonator mufflers, quad GT100 outlets in Cerakote black
• Tube diameter: 70 mm (2.75 inches)
• Outlets: 4 GT100 outlets of 100 mm
• Tip finish: Cerakote black (high-temperature ceramic)
• Fitting information: With exhaust valves
• Material: aerospace-grade stainless steel
• Manufacturer: Milltek Sport (United Kingdom)

Compatible vehicles

• Audi S8 D4 4.0 TFSI (Tiptronic, Quattro, 2013-2018)

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

Our most frequently asked questions

• Droning on the motorway? That is the number one concern on forums. This version keeps a resonator: the sound stays full under acceleration, but the exhaust remains unobtrusive at steady speed, ideal for everyday driving.
• And the neighbors in the morning? The valves are controlled as on the original system: closed and quiet at 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?

What users most often mention: the fit quality and a deep tone that is present but never harsh. That is the hallmark of Milltek Sport, a British manufacturer specializing in stainless steel exhausts.

Learn more

• Resonated or non-resonated cat-back exhaust: which one should you choose for your car?
• Exhaust valves: how they work and whether to keep them