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

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

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

Audi S5 B9 Sport Diff models without Brace Bars - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-100 Polished Trims

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

Audi S4/S5 B9 Sport Diff without Brace Bars - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-100 Burnt Titanium Trims