Audi S4 B9 Sport Diff without Brace Bars - Resonated Cat Back with Polished Trims Part_Quad Exit Conversion (Requires 2 x BMW gasket

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

The resonator delete pipe is manufactured with CNC mandrel bent T304 stainless steel pipework with a bore size of 2

The range topping M340i follows the traditional BMW formula

But without proper oil flow from a quality oil pump

Audi S4 B9 Sport Diff without Brace Bars - Resonated Cat Back with Polished Trims Part_Quad Exit Conversion (Requires 2 x BMW gasketOur 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