MAD Charge Pipe Set BMW M2/M3/M4 F80 F82 F87C S55Free Shipping Introducing the MAD s55 Charge Pipes the ultimate upgrade for your BMW M2, M3, or M4! Made from high quality materials, these charge pipes are designed to provide maximum performance and durability. The MAD s55 Charge Pipes are designed to replace the restrictive factory charge pipes, which can limit the airflow to your engine. With these charge pipes, you'll experience increased airflow and improved throttle response. The pipes are made