Milltek Non-Resonated Cat-Back Exhaust - Audi B9 S4 S5 - Polished Tips - SSXAU659

Milltek 2.50" Non-Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (non-sport differential models). Direct factory fitment replacement using OEM hangers and mounting points-no modification required.

Hand-finished T304L stainless steel construction with mandrel-bent piping engineered to eliminate factory resonance chambers. Quad polished oval trim finishes. 2.50" (63.5mm) bore diameter optimized for improved exhaust scavenging and full-throttle character without secondary silencers.

Fitment

• Audi S4 B9 3.0L TFSI (EA839) Saloon/Avant, non-sport differential models, 2016 and later
• Audi S5 B9 3.0L TFSI (EA839) Sportback, non-sport differential models, 2017 and later

Cat-back fitment: replaces factory cat-back section only. Factory turbocharger and downpipe remain in use. Requires 3-point hanger installation at factory points.

T304L hand-finished construction resists corrosion under continuous track use and daily driving alike-a material and process standard competitors reserve for premium tier systems.

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

Specifications

• Pipe diameter: 63.5mm (2.50")
• Fitting time: 1 to 1.5 hours, including removing the factory system

Fitment

• Audi > S4 > 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
• Audi > S5 > 3.0 V6 Turbo Sportback B9 (ONLY - Non Sport Diff Models Only) - Left Hand Drive Cars Only > 2017 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.