BMW E46 M3/M3 CSL - Cat-Back Exhaust System with Quad Polished Trims Part_De-Cat An additional wire is included

An additional wire is included for adding an optional on/off solenoid to stop fluid flow when the system is inactive

-SKF/TIMKEN  Shielded Deep Groove Radial Ball Bearing

Requires mandatory ECU reflash

The exhaust valves can also be controlled by the OEM valve control system

the Mercedes-AMG A45S produced 499

BMW E46 M3/M3 CSL - Cat-Back Exhaust System with Quad Polished Trims Part_De-Cat An additional wire is includedOur 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