Audi S4/S5 B9 Non Sport Diff models - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-90 Burnt Titanium Trims Caption PPF / Resonator Delete Sports Cat/De-Cat Front Downpipes -

Sports Cat/De-Cat Front Downpipes - To standard and Cobra Sport Cat/GPF-Back exhaust fitment

This allows racers to reliably increase boost and advance ignition timing—without using high-octane racing fuel—for power gains of up to 20%

0 'TFSI' Gen 2 Engine

2mm pipework and fits from the Gasoline Particulate Filter section backwards (GPF-back) replacing the centre and rear sections

420d & 430d

Audi S4/S5 B9 Non Sport Diff models - Non-Resonated (Louder) Cat-Back Exhaust System with Quad GT-90 Burnt Titanium Trims Caption PPF / Resonator Delete Sports Cat/De-Cat Front Downpipes -Our range of Cat Back systems are perfectly suited to cater for anyone looking to improve their sound and aesthetics, designed as a direct replacement for the original system, available in multiple configurations enabling the owner to choose the increase in volume of their exhaust and or add a more suitably aggressive tone. All our products are made from 304L Aircraft Grade stainless steel. This quality material will ensure that your Cat Back system