SHIMANO ULTEGRA Di2 RD-R8150 2x12 speed SHIMANO SHADOW RD Hidden Rear Derailleur For Road Bike For R8170 Set Original Shimano Model RD-R8150 Series ULTEGRA R8100 Color Series Colors Average weight 262 Remark: No bracket specifications available Rear transmission 12 High standard spring type | SHIMANO SHADOW RD ✔ Base | Direct Connection (Traditional) ✔ Installation method | direct installation ✔ The difference between the maximum and minimum number of sprocket teeth is 16T Total value of gear change range 39T Low position flywheel plate | maximum teeth 34T Low position flywheel plate | minimum tooth 30T High position flywheel plate | maximum teeth 14T High position flywheel plate | minimum tooth 11T Chain link bushing 4 with fluorine coating Guide wheel bearing ✔ Guide wheel | tension wheel bearing ✔ Guide wheel | Number of teeth combination 11 Guide wheel ✔ B-axis | hollow axis ✔ B-axis 2 | hollow axis ✔ Di2 Connectivity Wiring | Di2 Variable Speed ✔ Di2 Connectivity Wireless | Di2 Variable Speed ✔ Di2 Connectivity Wireless | Bluetooth ® LE customized version (* 1) | Adjustment mode information ✔ Di2 Connectivity Wireless | Bluetooth ® LE customized version (* 1) | Di2 battery level ✔ Di2 Connectivity Wireless | Bluetooth ® LE Customized Version (* 1) | Gear ✔ Di2 Connectivity Wireless | Bluetooth ® LE Customized Version (* 1) | SHIMANO STEPS Data Item (* 3) ✔ Di2 Connectivity Wireless | Bluetooth ® LE Customized Edition (* 1) | Compatible with E-TUBE RIDE ✔ Di2 Connectivity Wireless | Bluetooth ® LE Customized Edition (* 1) | Compatible with E-TUBE PROJECT ✔ Di2 Connectivity Wireless | ANT Private (* 2) | Adjustment Mode Information ✔ Di2 Connectivity Wireless | ANT Private (* 2) | Di2 Battery Level ✔ Di2 Connectivity Wireless | ANT Private (* 2) | Gear ✔ Di2 Connectivity Wireless | ANT Private (* 2) | SHIMANO STEPS Data Item (* 3) ✔ Firmware update through E-TUBE PROJECT ✔ SD50 port (pcs) 0 SD300 port (pcs) 1 SD50 connector (pcs) 0 SD300 connector (pcs) 0 LED for system status ✔ Charging port (piece) 1 Charging cable EW-EC300

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