The Shimano RT-CL900 disc brake rotor provides quiet and consistent braking control for any terrain.Consistent braking performance on any long steep descent thanks to excellent heat dissipationRobust arm shape for quiet operation without sacrificing weight or heat dissipationHeat dissipation paint boosts performance TECH SPECS table{border-collapse:collapse;width:100%;} td{text-align:left;padding:8px;font-weight:350;} tr:nth-child(even){background-color:#f2f2f2} th{background-color:#eb212e;color:white;text-align:left;padding:8px;} .desc .specs-heading{font-size:24px;font-weight:600;padding-top:35px;border-top:3px solid #f0f0f0;display:inline-block;border-bottom:4px solid #eb212e;width:142px;margin:0;} Rotor Size (mm) 140 Pad Compatibility All Pad Compounds Rotor Type Two Piece keyword search Dura Ace Hub/Disc Compatibility Center-Lock Rotor Size 140Mm