AMS Performance 2015-2018 BMW M3 / 2015-2020 BMW M4 w/ S55 3.0L Turbo Engine Charge PipesThe AMS Performance BMW S55 Charge Pipes for F80 M3, F82 & F83 M4, and F87 M2 Competition provide maximum airflow for maximum horsepower and torque. By increasing the size of the charge pipes on the S55 engine by up to 72%, we allow for more airflow resulting in the greatest increase in HP and torque. Designed as a complete package including both upper Charge Pipes and lower J Pipe, each pipe is powder coated in wrinkle black for good looks and