StopTech Replacement Right Side AeroRotor Ring for 332x32mm Big Brake Kits (BBK). This high-performance iron rotor ring features a patented internal vane design to optimize airflow and cooling efficiency. Drilled finish ensures improved initial bite and effective dispersal of water and debris. This item is a replacement component and includes: 1x AeroRotor Right Drilled Ring (P/N: 31.536.1202), 10x Mounting Hardware Bolts (P/N: 31.001.0001), 10x Washers/Nuts. Note: Bell/Hat is not included; intended for use with existing StopTech aluminum hats.