Milltek Resonated 80mm Cat-Back Exhaust - Audi RS6 RS7 C8 - Cut-In Fit - Polished Tips - SSXAU940

Milltek 80mm Resonated Cat-Back Exhaust system for Audi C8 RS6 (2020+) and RS7 (2019+) with 4.0L V8 bi-turbo engines. Direct replacement for the OEM system with 3.15" (80mm) mandrel-bent T304L stainless steel piping and polished oval tips. Engineered to deliver enhanced exhaust flow while maintaining a refined, OE+ tone character through resonated design.

Constructed from premium T304L stainless steel-the same material used in high-performance applications. Hand-finished polished oval trims. Resonated chamber tuned to eliminate excessive drone while preserving full-throttle presence. Direct factory fitment using OEM hangers and mounting points; no modification to vehicle required except cutting of factory downpipe outlet (system designed as cat-back upgrade path for future turbo-back installation).

Fitment

• Audi RS6 C8 4.0L V8 bi-turbo (2020 and later)
• Audi RS7 C8 4.0L V8 bi-turbo (2019 and later)

British-designed, precision-manufactured resonated systems that deliver measurable acoustic tuning without compromise to driveability or emissions compliance.

Fits OE system.

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: 3 to 3.5 hours, including removing the factory system

Fitment

• Audi > RS6 > C8 4.0 V8 bi-turbo in Performance Edition > 2020 and Later
• Audi > RS7 > C8 4.0 V8 bi-turbo > 2019 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.