MilltekResonated Cat-Back ExhaustFitment: Audi B9 S4 S5 - Cerakote Black Tips

Overview

Direct factory-fit resonated cat-back exhaust system for Audi B9 S4 and S5 3.0 TFSI V6 Turbo models. Engineered as a T304L stainless steel replacement, this system delivers OEM+ sound character and measurable exhaust flow improvement without modification to mounting points or brake components.

T304L stainless steel construction throughout, mandrel-bent and CNC-formed for precision fitment. 2.50" (63.5mm) bore diameter with resonated chamber tuning to eliminate drone while preserving full-throttle character. Quad GT-100 Cerakote trim outlets with polished finish. Uses factory hangers and OEM valve integration-direct bolt-on installation.

Details

Fitment Notes

• Audi S4 B9 Saloon/Sedan (2016+) - Sport Differential models only, without brace bars
• Audi S5 B9 Sportback (2017+) - Sport Differential models only, without brace bars
• Engine: 3.0 TFSI V6 Turbo (EA839)
• Non-resonated variants available

Milltek resonated systems are engineered to fine-tune OEM resonance points, delivering a controlled, refined tone that suits both daily driving and spirited use.

Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Fitment