MAD S55 J Pipe - F80 M3 | F82 / F83 M4 | F87 M2CUpgrade from the stock BMW S55 charge pipe to the MAD S55 charge pipe for maximum airflow and reliability! The stock BMW S55 charge pipe is plastic and prone to failure. It's only a matter of time before the charge pipe to break. The MAD S55 charge pipe is a strong aluminum piece; it will provide better airflow and won't fail, and fits like stock. The MAD charge pipe comes with two meth bungs; both bungs are sealed. If you do not intend to use