Milltek Non-Resonated Cat-Back Exhaust - Audi B9 S4 S5 - Cerakote Black Tips - SSXAU705

The Milltek 2.50" Non-Resonated Cat-Back Exhaust System is engineered for the Audi B9 S4 and S5 3.0 V6 Turbo, delivering enhanced exhaust flow, dyno-proven performance gains, and an aggressive engineered tone. Direct factory fitment-no modification required.

Constructed from T304L stainless steel and hand-finished with quad Cerakote Black oval tips, this non-resonated system is mandrel-bent throughout for maximum flow efficiency. The 2.50" (63.50mm) bore eliminates resonance peaks at cruise and full-throttle operation points, allowing the signature V6 turbo character to dominate across the RPM range. OEM hangers and direct bolt-on fitment ensure seamless installation on compatible platforms.

Fitment

• Audi S4 B9 Saloon/Sedan (2016+) - Sport Differential models, without brace bars
• Audi S5 B9 Sportback (2017+) - Sport Differential models, without brace bars

Manufactured with precision-engineered specifications and delivered with the confidence of a globally recognized performance brand.

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

Fitment

• Audi > S4 > 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Sport Diff Models Only & Without Brace Bars) - Left Hand Drive Cars Only > 2016 and Later
• Audi > S5 > 3.0 V6 Turbo Sportback B9 (ONLY - Sport Diff Models Only & without Brace Bars) - 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.