Milltek Resonated Cat-Back Exhaust - Audi B9 A4 2.0 TFSI - Polished Tips - SSXAU608

Direct-fit resonated cat-back exhaust system for the Audi B9 A4 2.0 TFSI Quattro Saloon and Avant. The Milltek 2.75" (70mm) mandrel-bent T304L stainless steel design maintains OEM+ fitment while delivering engineered tone with controlled resonance tuning-sportier character than stock, without full-throttle harshness.

Hand-finished T304L stainless construction with dual GT-100 polished trim tips. Resonated chamber tuned to eliminate drone at highway cruising speeds while enhancing mid-range and full-throttle note. Direct factory fitment uses OEM hangers and mounting points; no modification required. Decibel-tested for street compliance.

Fitment & Installation

• Audi B9 A4 2.0 TFSI Quattro Saloon
• Audi B9 A4 2.0 TFSI Quattro Avant
• Cat-back system (rear of secondary catalytic converter)
• Direct bolt-on; OEM hanger compatible

This resonated design balances real-world drivability with the engineered tone enthusiasts demand.

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

Specifications

• E-marked for road use

Fitment

• Audi > A4 > 2.0 TFSI B9 Quattro Saloon & Avant > 2016 to 2023

• 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.