Product Description Shimano Center Lock brake rotor RT-EM910 - constant power for STEPS The Shimano RT-EM910 Center Lock brake rotor is designed for e-bike riders with STEPS motors who demand maximum braking performance and heat control. Thanks to the Ice-Tech FREEZA sandwich composite, the RT-EM910 perfectly dissipates the resulting heat, contributing to constant performance even on steep descents. The brake rotor has a lockring with external teeth and comes with a magnet for the SM-DUE11 or EW-SS301 rear wheel speed sensor. It can be used with numerous disc brakes and both organic and sintered pads. Guidelines for Replacing E-bike Components:Before you replace components on your e-bike, please read through the guidelines for component replacement for CE-marked e-bikes/pedelecs with pedal assistance. Technical Information:Mount:Center LockDiameter:180 mm, 203 mmDesign:2-pieceRotor Material:stainless steel outer and aluminium core sandwich constructionSpider Material:aluminiumApproved For:Brake Compatibility:BR-M9100*, BR-M9120, BR-M9000, BR-M9020, BR-M8100, BR-M8120, BR-M8110-R*, BR-M8000, BR-M8020, BR-M7100, BR-M7120, BR-M7110-R*, BR-M7000, BR-M6100, BR-M6120, BR-M6000, BR-MT520, BR-MT420, BR-M820, BR-M640, BR-U8000, BR-U8020, BR-S7000, BR-S700, BR-R8170*, BR-R8070*, BR-R7170*, BR-R7070*, BR-4770*, BR-RS805*, BR-R785*, BR-RS785*, BR-RS505*, BR-RS405*, BR-RX820*, BR-RX820-LE*, BR-RX810*, BR-RX400*Brake Pad Compatibility:sintered**, organic * not compatible with 203 mm ** with BR-S700 and BR-S7000 only organic Compatibility:SM-DUE11 speed sensorEW-SS301 speed sensorDU-EP800 MotorDU-EP801 MotorDU-EP600 MotorDU-E7000 MotorDU-E6100 MotorDU-E5000 MotorDU-E8080 Motor (Japanese market only)DU-E6180 Motor (Japanese market only)DU-E5080 Motor (Japanese market only)for brake pads with narrow pad shapeonly for use on the rear wheel (in combination with e.g. RT-MT900 on the front wheel)Features:including magnet for Shimano STEPS speed sensor SM-DUE11 / EW-SS301FREEZA Ice Technology and sandwich construction for even faster heat dissipationperformance indicator: Ultimate (level 3 out of 3)painted spider, polished rotorlockring made of aluminium with external toothing, anodisedTechnology:Ice Tech FREEZA Shimano Ice Technologies provide a fast heat dissipation at your disc brake. The brake pads are equipped with aluminium cooling fins. The brake rotor is constructed using a sandwich technique in which stainless steel encloses an aluminium core. The stainless steel on both flanks ensures long durability, the aluminium allows heat dissipation. FREEZA is the further development of the brake rotor, in which additional ribs in the aluminium provide even better heat compensation. This cooling technology creates consistently high performance and longer brake pad durability while reducing fading and brake noise. Manufacturer Numbers:180 mm:I-RTEM910ME203 mm:I-RTEM910LEContents:1 x Shimano RT-EM910 brake rotor with magnet for speed sensor1 x Shimano lockrings Weight: silver-black | 180 mm: 140 g silver-black | 203 mm: 154 g Manufacturer: Shimano Europe B.V. High Tech Campus 92 5656 AG Eindhoven Netherlands info@shimano-eu.com