Milltek Resonated Cat-Back Exhaust - Audi B9 S4 S5 - Polished Tips - SSXAU648

Milltek 2.50" Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (non-Sport Diff). Direct factory fitment using OEM hangers, no modification required. Hand-finished T304L stainless steel construction with quad polished oval trims.

The resonated design eliminates OE resonance points that cause cabin drone while preserving a sportier, more pronounced exhaust character at full throttle. 2.50" (63.50mm) mandrel-bent piping maximizes flow efficiency. Dyno-tested across the B9 platform for measurable torque gains without sacrificing street composure.

Fitment

• Audi S4 3.0 TFSI V6 B9 Saloon/Sedan & Avant - 2016 and later (non-Sport Diff)
• Audi S5 3.0 TFSI V6 B9 Sportback - 2017 and later (non-Sport Diff)

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
• E-marked for road use

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.