With a focus on decreasing disc brake rotor heat deformation, the result of the new disc brake rotor is quieter than ever brake performance without sacrificing weight or heat dissipation. FEATURES - Quieter than ever, but with superb, consistent braking performance on any long, steep descents thanks to excellent heat dissipation - The new arm shape is more robust, leading to quieter operation - Heat dissipation paint boosts performance - Disc brake rotor size: 140 mm, 160 mm PRODUCT SPECIFICATIONS - MODEL NO RT-CL900 - SERIES DURA-ACE R9200 Series - Average weight 114 (160 mm) 96 (140 mm) - ICE TECHNOLOGIES - ICE TECHNOLOGIES FREEZA - CENTER LOCK - Outside diameter_140 mm - Outside diameter_160 mm - ICE TECHNOLOGIES FREEZA w/ heat dissipation paint - Pad lining shape compatibility_Narrow