Audi S4/S5 B9 Sport Diff without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad Cerakote Black Oval Trims

Audi S4/S5 B9 Sport Diff without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad Polished Oval Trims

Audi S4/S5 B9 Sport Diff without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad GT-100 Cerakote Trims

Audi S5 B9 Sport Diff models without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad Black Oval Trims

Audi S4/S5 B9 Sport Diff without Brace Bars - Non-Resonated (Louder) Cat-Back Exhaust System with Quad Cerakote Black Oval Trims

Audi S4/S5 B9 Non Sport Diff models - Resonated (Quieter) Cat-Back Exhaust System with with Quad Cerakote Black Oval Trims