Overview
Milltek Resonated Cat-Back Exhaust System for Audi B9 S5 3.0 V6 Turbo Coupe and Cabriolet (Non-Sport Diff models only). Direct factory fitment replacement engineered to enhance exhaust flow, refine tone character, and improve aesthetics while maintaining OEM+ compatibility.
Hand-finished T304L stainless steel construction with mandrel-bent 2.50" (63.50mm) diameter piping and quad GT-100 titanium trim outlets. Resonated design eliminates excessive drone while preserving the full-throttle character of the V6 engine. Uses factory hangers and mounts-no modification required. Engineered in-house with dyno testing to validate performance gains and confirm tone profile.
Details
Fitment Notes & Compatibility
- Audi S5 B9 Coupe (2017-2024)
- Audi S5 B9 Cabriolet (2017-2024)
- Non-Sport Differential models only
- 3.0L V6 Turbo (TFSI)
- Cat-back system (requires factory cat or OEM-equivalent hi-flow unit)
Every system is decibel-tested and EC-approved for global application.
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
Fitment
| Years | Make | Model | Engine Family | Engine | Trim |
|---|---|---|---|---|---|
| 2018-2019 | Audi | S5 | EA839 | 3.0T | All |
