High-performance charge pipe kit designed for BMW M2/M3/M4 models equipped with the S55 biturbo engine. Replaces the restrictive OEM plastic pipes with flow-optimized aluminum tubing to prevent bursting under high boost pressure. Features a 57mm diameter for improved airflow and throttle response. The kit includes: 2x Aluminum Charge Pipes (Left & Right), 2x Silicone Couplers (Anthracite), 4x Hose Clamps. Equipped with 1/8 NPT ports for water-methanol injection. Article numbers included in the set: 210001124 (Wagner Tuning/Brembo assembly).