Audi S5 B9 Sport Diff models without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad Black Oval Trims tiguanmk1 The de-cat exhaust version is

The de-cat exhaust version is sold for motorsport and off road use only and will NOT be able to pass a UK MOT emissions test or police roadside checks

The M3 development has been based around a valved cat back exhaust with the addition of a secondary de-cat (catalyst bypass) exhaust upgrade

This is for 5 Litres

5" Monster downpipe

Audi S5 B9 Sport Diff models without Brace Bars - Resonated (Quieter) Cat-Back Exhaust System with Quad Black Oval Trims tiguanmk1 The de-cat exhaust version isOur 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