Milltek Race Non-Resonated Cat-Back Exhaust - Audi B8 S5 - Polished Tips - SSXAU265

The Milltek Race Non-Resonated Cat-Back Exhaust System is engineered for the Audi B8 S5 3.0 TFSI Coupe and Cabriolet. This direct factory-fit system replaces the OEM exhaust with a 2.37" (60.30mm) mandrel-bent T304L stainless steel design, delivering enhanced flow, dyno-proven performance gains, and a fully open, aggressive sound character.

Hand-finished T304L stainless steel construction with quad polished outlet trims. Uses OEM hangers and mounting points-no modification required. The non-resonated design eliminates the factory resonance chamber for maximum acoustic expression at full throttle, making this the loudest cat-back option available for the B8 S5. Engineered for closed-course and track use; street legality may vary by jurisdiction.

Fitment

• Audi S5 B8 Coupe (3.0 TFSI, 2009-2011)
• Audi S5 B8 Cabriolet (3.0 TFSI, 2009-2011)

Technical Specifications

• Pipe Diameter: 2.37" / 60.30mm, mandrel-bent
• Material: T304L stainless steel, hand-finished
• Resonated: No (race-spec, non-resonated)
• Outlet Style: Quad polished trims
• Fitment Type: Cat-back, direct OEM replacement

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 > S5 > 3.0 TFSI B8 Coupe & Cabriolet (S tronic) > 2009 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.