EC
Milltek Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Polished Tips
SKU: SSXAU644
Parts
- MSAU529: Polished GT (round) 90 Exhaust Tip, Standard - MSAU529
- MSAU693: LH Downpipe - MSAU693
- MSAU694: RH Downpipe - MSAU694
- MSAU695: Front Silencer - MSAU695
- MSAU698: Connecting Pipe - MSAU698
- MSAU699: LH Rear Silencer with Valve - MSAU699
- MSAU700: RH Rear Silencer with Valve - MSAU700
- MSAU701: LH Mounting Bracket - MSAU701
- MSAU702: RH Mounting Bracket - MSAU702
Documents
Description
Milltek Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (non-sport differential models). Direct factory fitment replacement using OEM hangers, no modification required. 2.50" (63.5mm) mandrel-bent T304L stainless steel construction with quad GT-90 polished tips.
Engineered tone character balances sportier note with refinement-resonated design targets OE resonance points for OE+ sound profile without excessive drone. T304Lstainless steel resists corrosion and thermal stress. CNC-formed joints and hand-finished construction. Dyno-proven improved exhaust flow supports modest performance gains across the power band.
Fitment
- Audi S4 B9 3.0L Turbo V6 Saloon/Sedan & Avant (non-sport differential) 2016+
- Audi S5 B9 3.0L Turbo V6 Sportback (non-sport differential) 2017+
Cat-back design: replaces factory exhaust from rear of secondary catalytic converter rearward. OEM valves and electronic controls remain unaffected. Fits stock suspension and body.
Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.
Key Facts
| Pipe Diameter | 63.50 |
| 1 to 1.5 hours to fit (including removing OE system) | |
| Race Product | No |
| EMarked | Yes |
| EMark Number | AudiS4S5B9 |
System Fitment List
Shipping Information
This system ships in 2 boxes.
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