BMW M2 G87, M3 G80 G81 & M4 G82 G83 Arma Speed Carbon Fibre Cold Air Intake (2021+)By using 3D scanning tech, the tube of the BMW G80 M3 G82 M4 intake system is built in one piece and smoothly curved to provide a direct path for airflow which they can spool with less drag. If there is miss match or level gap, it will cause air turbulence inside the tube. Therefore we designed the tube not only in one piece but also in a progressive enlargement to allow the airflow smoothly into the turbo inlet to work more efficiently. The airbox