Genuine OEM Audi Rear Ventilated Brake Disc, part number 4M0615601P. This critical braking component provides a robust and stable surface for the brake pads to generate friction, effectively slowing and stopping the vehicle. Its ventilated design enhances heat dissipation, preventing brake fade during heavy use. This disc is specifically designed for the rear axle. Weighing 9 kg, it is a substantial component of the braking system. Choosing genuine OEM ensures precise manufacturing tolerances, optimal material composition for durability and consistent braking performance, and correct balance for vibration-free operation.