Milltek Resonated Cat-Back Exhaust - Audi B8 S5 3.0 TFSI - Cerakote Black Tips - SSXAU266

The Milltek Resonated Cat-Back Exhaust System is a direct factory replacement for the Audi B8 S5 3.0 TFSI Coupe and Cabriolet, engineered to deliver improved exhaust flow, measurable performance gains, and refined OE+ sound character without excessive drone.

Constructed from T304L stainless steel with mandrel-bent 2.37" (60.30mm) piping, this resonated system uses OEM hangers and mounting points for seamless fitment. The dual Cerakote black tips provide aggressive aesthetics while the integrated resonance chamber is tuned to eliminate unwanted frequencies at cruise, preserving full-throttle character.

Fitment & Specifications

• Vehicle: Audi B8 S5 3.0 TFSI Coupe & Cabriolet
• Pipe Diameter: 2.37" (60.30mm) mandrel-bent
• Material: T304L stainless steel, hand-finished
• Type: Resonated cat-back (stock cats retained)
• Tip Style: Dual Cerakote black outlets
• Installation: Direct fitment, no modifications required
• Sound Profile: OE+ tone with engineered resonance tuning

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
• E-marked for road use

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.