Milltek Resonated Cat-Back Exhaust - Audi B9 S4 S5 - Polished Tips - SSXAU644
Ships free in the US
Make sure this fits your car
Fits: S4 / S5 / RS5 B9
- Shop tested in Dallas
- Free pickup in Dallas
- Installs at our shop
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.
Specifications
- Pipe diameter: 63.5mm (2.50")
- Fitting time: 1 to 1.5 hours, including removing the factory system
- E-marked for road use
Fitment
- Audi > S4 > 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
- Audi > S5 > 3.0 V6 Turbo Sportback B9 (ONLY - Non Sport Diff Models Only) - Left Hand Drive Cars Only > 2017 and Later
Listed for these cars. Check the title and description for exact years, body styles and drivetrain.
| Make | Model | Chassis | Years | Fits |
|---|---|---|---|---|
| Audi | S4 / S5 / RS5 | B9 | 2018+ |
Not sure? Call or text 945-954-1142 with your car or VIN.
- Free US shipping on orders over $250.
- Free pickup at our Dallas shop, usually ready within 24 hours.
- Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
- Want it installed? Book the install at thegbmotors.com.
Full details are on our shipping and returns page.
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