MilltekResonated Cat-Back ExhaustFitment: Audi B9 S4 S5 - Burnt Titanium Tips

Overview

Milltek 2.50" 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. Mandrel-bent T304L stainless steel construction with hand-finished quad GT-100 burnt titanium trim tips.

The resonated design eliminates resonance peaks while preserving OE+ tone character across the rpm range. 63.50mm (2.50") pipe diameter optimizes scavenging for the 3.0L turbo V6. CNC-formed internals tuned for the B9 platform's backpressure curve. Dyno-proven gains in mid-range torque delivery without sacrificing street usability.

Details

Fitment Notes

• Audi S4 3.0 Turbo V6 B9 Saloon/Sedan and Avant - 2016 and later (non-sport differential models)
• Audi S5 3.0 Turbo V6 B9 Sportback - 2017 and later (non-sport differential models)

Hand-finished stainless construction resists thermal cycling and corrosion. Each system is decibel-tested to ensure compliance with street use while delivering engineered sound character.

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

Fitment