RWD N55 Charge Pipes For BMW M235i, 335i, 435i, M2 (AT & MT) - ARM MotorsportsUpgrade your BMW M2, M235i, 335i, or 435i with ARM's aluminum N55 charge pipe. Meth ready, CNC machined, and backed by a lifetime warranty. The ARM Motorsports F3X N55 Charge Pipe is engineered to eliminate the common failure point found in BMWs factory plastic charge pipes, especially under increased boost levels from tuning. Designed for enthusiasts and performance builds alike, this upgrade ensures reliability and optimal airflow in your BMW M2,