Overview
Milltek Non-Resonated Cat-Back exhaust system for Audi B9 S5 Sportback with Sports Diff and factory brace bars. Direct bolt-on replacement using OEM hangers and mounting points-no modification required. Our loudest system in the B9 S5 lineup, engineered to deliver maximum sound character and measurable performance gains on the dyno.
Hand-finished T304L stainless steel construction with mandrel-bent piping throughout. 2.5" diameter main pipe flows to 4" GT-100 round tips, or upgrade to quad oval tips in polished stainless or Cerakote Black finish. Non-resonated design eliminates the mid-range resonance point for full-throttle presence; track-focused tuning suitable for closed-course use.
Details
- Fitment: Audi B9 S5 Sportback (2017-present) with Sports Differential and Factory Brace Bars
- Material: T304L stainless steel, hand-finished
- Pipe diameter: 2.5" mandrel-bent
- Tip options: 4" GT-100 round or quad oval (polished or Cerakote Black)
- Installation: Direct OEM fitment, no welding or modification
- Sound character: Full-throttle note with minimal drone elimination
Engineered in-house and dyno-proven.
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 |
