Cat-Back Exhaust

Milltek Resonated Cat-Back Exhaust | Audi B9 S5 Coupe - Brushed Titanium Tips

Brand: Milltek

Part #: SSXAU681

$4,193.33+4193 pts

In Stock

SKU: MK-SSXAU681

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Description

Milltek Resonated Cat-Back Exhaust System for Audi B9 S5 3.0 V6 Turbo Coupe and Cabriolet (Non-Sport Diff models only). Direct factory fitment replacement engineered to enhance exhaust flow, refine tone character, and improve aesthetics while maintaining OEM+ compatibility. Hand-finished T304L stainless steel construction with mandrel-bent 2.50" (63.50mm) diameter piping and quad GT-100 titanium trim outlets. Resonated design eliminates excessive drone while preserving the full-throttle character of the V6 engine. Uses factory hangers and mounts-no modification required. Engineered in-house with dyno testing to validate performance gains and confirm tone profile. Fitment & Compatibility • Audi S5 B9 Coupe (2017-2024) • Audi S5 B9 Cabriolet (2017-2024) • Non-Sport Differential models only • 3.0L V6 Turbo (TFSI) • Cat-back system (requires factory cat or OEM-equivalent hi-flow unit) Every system is decibel-tested and EC-approved for global application. Designed and manufactured in the UK with 40+ years of performance exhaust heritage. Tested at the Nurburgring.

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Fits 7 vehicles including:

2017 Audi S5— 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023
2018 Audi S5— 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023
2019 Audi S5— 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023
2020 Audi S5— 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023
2021 Audi S5— 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023
2022 Audi S5— 3.0 V6 Turbo Coupe/Cabrio B9 (Non Sport Diff Models Only) > 2017 to 2023
+ 1 more vehicles