Cat-Back Milltek Audi S3 8V-8V2 2.0 TFSI 2013-2018 without DPF - ECE Homologated - resonated - Quad GT100 Polished Tips

Milltek Sport exhaust system for Audi S3 8V-8V2

Does the original sound of your Audi S3 8V-8V2 leave you wanting more? This Milltek Sport stainless steel exhaust system is the most requested upgrade among owners: more presence, a true sound signature and long-lasting build quality.

Technical specifications

• Milltek part number: SSXAU421
• Part type: Exhaust system
• Configuration: resonated (with resonator), with valves
• Details: ECE homologated - with resonator - 4 polished stainless steel GT100 tips
• Tube diameter: 76.2 mm (3 in)
• Outlets: 4 GT100 100 mm tips
• Tip finish: polished stainless steel
• Fitting information: With valves
• Material: aerospace-grade stainless steel
• Homologation: ECE / EC homologated
• Manufacturer: Milltek Sport (UK)

Compatible vehicles

• Audi S3 8V-8V2 2.0 TFSI (Quattro, Sportback, 2013-2018, without DPF)

Not sure about compatibility with your vehicle? Contact us with your VIN before ordering.

Most frequently asked questions

• Highway drone? This is the number one concern on forums. This version keeps a resonator: the sound stays full under acceleration, while the exhaust 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: the exhaust stays closed and discreet on cold start or in comfort mode, and fully open in sport mode.
• Homologation: this exhaust is ECE / EC homologated, a real advantage for driving with peace of mind and passing the technical inspection (contrôle technique).
• Installation: the system uses the original mounting points. A workshop typically fits it in one to two hours.

Why choose Milltek Sport?

Milltek Sport designs and manufactures its exhausts in England, using mandrel-bent tubes to preserve the internal diameter and a fit developed on the vehicle. The result: a clean installation without modification, and a sound tuned to remain pleasant for everyday use.

Going further

• Cat-back exhaust, resonated or non-resonated: which one should you choose for your car?
• Valved exhaust system: how does it work and should you keep the valves?
• Exhaust system and the technical inspection (contrôle technique) in France