Milltek Race Cat-Back Exhaust - Audi B8 S4 V6 - Cerakote Black Tips - SSXAU557

Milltek Race Cat-Back Exhaust System for Audi B8 S4 Supercharged V6 and B8 S5. Non-resonated design engineered for direct OEM fitment, delivering increased exhaust flow and an aggressive, full-throttle tone character.

Constructed from T304L stainless steel, mandrel-bent throughout with hand-finished Cerakote Black quad trims. Uses factory hangers and mounting points-no modification required. The 2.37" (60.30mm) bore facilitates improved scavenging and measurable performance gains on dyno testing.

Fitment

• Audi B8 S4 Supercharged V6 (2009-2012)
• Audi B8 S5 V6 (2009-2012)

Technical Specifications

• Pipe Diameter: 2.37" (60.30mm)
• Material: T304L stainless steel
• Design: Non-resonated (race specification)
• Finish: Hand-finished with Cerakote Black quad trims
• Installation: Direct factory fitment, OEM+ compatibility

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

Specifications

• Pipe diameter: 60.3mm (2.37")
• Fitting time: 2 to 3 hours, including removing the factory system

Fitment

• Audi > S4 > 3.0 Supercharged V6 B8 > 2009 to 2012
• Audi > S5 > 3.0 TFSI B8 Sportback > 2010 to 2011

• 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.