Cat-back Milltek Audi S4 B8, S5 8T - ECE Homologated - with primary muffler, resonated - Quad GT80 Black Cerakote Tips

Milltek Sport exhaust system for Audi S4 B8 / S5 8T

Does the stock sound of your Audi S4 B8 / S5 8T leave you wanting more? This Milltek Sport stainless steel exhaust system is the one owners ask for most: more presence, a true sound signature and build quality that lasts.

Technical specifications

• Milltek part number: SSXAU556
• Part type: Exhaust system
• Configuration: resonated (with resonator)
• Detail: ECE homologated, with primary and resonator, quad GT80 black Cerakote tips
• Tube diameter: 60.3 mm
• Outlets: 2 GT80 tips, 80 mm each
• 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 S4 B8 3.0 TFSi 333 hp (2009-2012)
• Audi S5 8T 3.0 TFSI (Sportback, 2010-2011)

Not sure it fits your vehicle? Contact us with your VIN before ordering.

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 plus for driving with peace of mind and passing the technical inspection.
• 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?

A benchmark for European tuners, Milltek Sport tunes each of its systems directly on the vehicle. Mandrel bends, careful welds and aerospace-grade stainless steel make for a system that lasts and sounds right.

Learn more

• Resonated or non-resonated cat-back exhaust: which one should you choose for your car?
• Exhaust systems and the French roadworthiness inspection (contrôle technique)