Milltek Resonated Cat-Back Exhaust - Audi B9 S4 S5 - Cerakote Black Tips - SSXAU695

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.

Fitment

• 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.

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 - 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.