Audi RS4 B9 Avant - Resonated Cat-Back Exhaust System with Polished Oval Trims r8mk1/42 With the valve open the

With the valve open the sound is amplified with a deeper tone and more audible pops and bangs

We find many customers start with a resonator delete but soon take this further

0 TSI engine and produces 300PS

“Building on an existing first class reputation in the BMW tuning market

Audi RS4 B9 Avant - Resonated Cat-Back Exhaust System with Polished Oval Trims r8mk1/42 With the valve open theOur 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