Shimano Center Lock Disc Brake Rotor ICE TECHNOLOGIES FREEZA 203/180/160/140 mm RT-CL800 Provides Quiet Brake Control in Any Situation Features Excellent Heat Dissipation for Quieter Than Ever and Always Stable Braking Performance Even on Longer, Steady Downhill Updated Arm Shape Improves Firmness and Improved Silent Disc Brake Rotor Size: 5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5.5 inches (14 inches (14 inches (140 inches (140 mm) 180 mm mm, 8.0 inches (203 mm).