Milltek Resonated Cat-Back Exhaust - Audi B9 S4 S5 - Brushed Titanium Tips - SSXAU642

Milltek Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (Non Sport Diff models). Direct factory fitment, 2.50" mandrel-bent T304L stainless steel construction with quad GT-100 titanium trim tips. OEM+ sound character engineered to enhance performance while maintaining street-legal resonance.

Hand-finished T304L stainless steel throughout. Mandrel-bent 2.50" (63.5mm) pipe diameter optimizes exhaust scavenging for improved flow. Resonated chamber tuned to the B9 platform's natural resonance point-eliminating drone while delivering a refined, purposeful tone at full throttle. Direct OEM hanger compatibility, no modification required.

Fitment

• Audi S4 3.0L Turbo V6 B9 Saloon/Sedan & Avant (Non Sport Diff) - 2016 and later
• Audi S5 3.0L Turbo V6 B9 Sportback (Non Sport Diff) - 2017 and later

Every system is decibel tested and EC type approved, ensuring performance gains backed by dyno validation and real-world durability.

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

• 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.