The Audi S3 Cat Back performance exhaust system is one to be reckoned with.

3" Cat Back, Quad Split Rear, with Carbon Fiber Tips, T304 Stainless Steel

MBRP 15-18 Audi S3 SS 3in Quad Split Rear Exit w/ Carbon Fiber Tips - T304

3in. Cat Back; Quad Split Rear Exit; T304 with Carbon Fiber Tips

3" Cat Back, Quad Split Rear,with Carbon Fiber Tips, T304

(4) 4" OD Carbon Fiber Tips Included , Valve Delete

MBRP Exhaust Pro Series, Cat-Back System.

MBRP Exhaust Cat-Back System

Exhaust System Kit

Cat-Back System

Euro

Dual