Milltek 80mm Resonated OPF-Back Exhaust - Audi D5 S8 - Carbon Fibre Tips - SSXAU947

Milltek 80mm Cat Back Resonated OPF-Back Exhaust System for Audi D5 S8 4.0 TFSI V8 (2020+). Direct factory fitment replacement engineered to deliver enhanced exhaust flow, refined OE+ tone character, and premium aesthetics with available JET-115 carbon trims.

Hand-finished T304L stainless steel construction with 3.15" (80mm) mandrel-bent primary piping. Resonated design eliminates resonance peaks while preserving full-throttle character. Direct OEM hanger compatibility-no modification required. Decibel-tested for street-legal performance driving.

Fitment

• Audi S8 D5 4.0 TFSI V8 Saloon (2020+)
• Standard and Long Wheelbase variants
• OPF (Gasoline Particulate Filter) compatible-secondary cats not required
• Direct cat-back replacement; retains OEM primary section

Dyno-proven gains in mid-range torque with refined acoustic signature tuned specifically for the D5 S8 platform.

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

Specifications

• Pipe diameter: 80mm (3.15")
• Fitting time: 2.5 to 3.5 hours, including removing the factory system
• E-marked for road use

Fitment

• Audi > S8 > D5 4.0 TFSI V8 Saloon/Sedan - Standard Wheel Base (GPF US/ROW Models) > 2020 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.