Cat-Back Exhaust

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

Brand: Milltek

Part #: SSXAU648

$3,987.89+3987 pts

In Stock

SKU: MK-SSXAU648

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Description

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.

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Fits 22 vehicles including:

2016 Audi S4— 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
2018 Audi S4— 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
2019 Audi S4— 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
2020 Audi S4— 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
2021 Audi S4— 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
2022 Audi S4— 3.0 Turbo V6 B9 - Saloon/Sedan & Avant (ONLY - Non Sport Diff Models) - Left Hand Drive Cars Only > 2016 and Later
+ 16 more vehicles