Audi S4 B9 Sport Diff without Brace Bars - Resonated Cat Back with Polished Trims Part_Quad Exit Conversion 8T vehicles with the bolt

8T vehicles with the bolt down coilpacks

(Requires 2 x BMW gasket - part number 18307851168 - not included)

The range topping M340i follows the traditional BMW formula

Reduced heat production

Audi S4 B9 Sport Diff without Brace Bars - Resonated Cat Back with Polished Trims Part_Quad Exit Conversion 8T vehicles with the boltOur 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