BMW F20/F21 M135i (Non X-Drive) - Cat-Back Exhaust System with Race Rear Silencer & Polished Tips NGK The main brief was to

The main brief was to improve the sound and unleash the full potential of that straight-six engine

designed to optimise airflow

We have a before and after video on our website which demonstrates the substantial tonal improvements with the new part fitted

Example of BMW M135i sports exhaust (Cat back - Non-resonated)

BMW F20/F21 M135i (Non X-Drive) - Cat-Back Exhaust System with Race Rear Silencer & Polished Tips NGK The main brief was toOur 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