Milltek Non-Resonated Cat-Back Exhaust - Audi B9 S5 Coupe - Cerakote Black Tips - SSXAU686

Direct factory-fit performance cat-back exhaust system for the Audi B9 S5 3.0 V6 Turbo Coupe and Cabriolet (non-Sport Diff models). The Milltek 2.50" non-resonated design delivers engineered tone with full-throttle character and measurable exhaust flow improvement over OEM.

Hand-finished T304L stainless steel construction with mandrel-bent tubing and CNC-formed collector. Quad GT-100 gloss black exit trims. Direct OEM hanger compatibility-no modification required. Uses factory mounting points for seamless integration.

Fitment

• Audi B9 S5 3.0L V6 Turbo Coupe (2017-2024)
• Audi B9 S5 3.0L V6 Turbo Cabriolet (2017-2024)
• Non-Sport Differential models only

Specifications

• Pipe diameter: 2.50" (63.50mm) mandrel-bent
• Material: T304L stainless steel
• Design: Non-resonated for open-throttle tone
• Trims: Quad GT-100 gloss black
• Installation: Cat-back (OEM downpipe and cats retained)

OEM+ fitment with precision engineering-the difference between off-the-shelf and hand-finished.

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 > S5 > 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023

• 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.