Cat-Back Exhaust

Milltek Non-Resonated Cat-Back Exhaust | Audi B9 S4 S5 - Cerakote Black Tips

Brand: Milltek

Part #: SSXAU658

$3,759.98+3759 pts

In Stock

SKU: MK-SSXAU658

Ships direct from the warehouse Guaranteed fitment 30-day returns

Description

Milltek 2.50" Non-Resonated Cat-Back Exhaust System for Audi B9 S4 and S5 (non-sport differential models). Direct factory fitment replacement engineered to amplify exhaust note and improve flow dynamics. Constructed from T304L stainless steel, hand-finished with quad GT-90 Cerakote Black tips. Mandrel-bent 63.5mm (2.50") primary pipes eliminate resonance points for full-throttle character. Uses OEM hangers and mounting points-no modification required. Non-resonated design delivers aggressive tone suited for closed-course and track use; street legality varies by jurisdiction. Fitment • Audi S4 3.0L Turbo V6 B9 Saloon/Sedan & Avant (non-sport differential) 2016+ • Audi S5 3.0L Turbo V6 B9 Sportback (non-sport differential) 2017+ Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

Check Vehicle Fitment

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