Cat-Back Milltek Audi S5 8T 2009-2011, ECE Homologated, with primary muffler, resonated, Quad GT80 Cerakote Black tips

Milltek Sport Exhaust System for Audi S5 8T

Is the original sound of your Audi S5 8T leaving you wanting more? This stainless steel Milltek Sport exhaust system is the upgrade owners request most: more presence, a true signature sound, and long-lasting build quality.

Technical Specifications

• Milltek part number: SSXAU558
• Part type: Exhaust system
• Configuration: resonated (with resonator)
• Details: ECE homologated - with primary muffler and resonator - quad GT80 tips in black Cerakote
• Tube diameter: 60.3 mm
• Outlets: 2 GT80 outlets, 80 mm
• Tip finish: black Cerakote (high-temperature ceramic)
• Fitting information: ECE version
• Material: aerospace-grade stainless steel
• Homologation: ECE / EC homologated
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi S5 8T 3.0 TFSI (S-Tronic, Coupé - Cabriolet, 2009-2011)

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

Our Most Frequently Asked Questions

• Highway drone? It is the number one concern on forums. This version keeps a resonator: the sound stays full under acceleration, while the system stays calm at steady cruising speed, ideal for everyday driving.
• Homologation: this system is ECE / EC homologated, a real advantage for driving with peace of mind and passing the technical inspection.
• Fitting: the system uses the original mounting points. A shop with the right equipment typically fits it in one to two hours.

Why choose Milltek Sport?

A benchmark among European tuners, Milltek Sport develops each of its systems directly on the vehicle. Mandrel bending, careful welds and aerospace-grade stainless steel ensure a system that lasts and sounds right.

Further Reading

• Resonated or non-resonated cat-back exhaust: which one should you choose for your car?
• Exhaust systems and technical inspection in France