Shimano Dura-Ace R9250 Di2 12 Speed Rear Derailleur

The Dura-Ace R9200 12 speed Di2 technology delivers 58% faster rear shifting than RD-9150. Shimano’s wireless Di2 processing technology, increases transmission speed and performance, offering reliable, fast shifts every single time. Shimano's fastest ever shifting across Shimano's widest ever Dura-Ace gear range, the RD-R9250 is capable of both race wins and personal bests.

The Dura-Ace RD-R9250 integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worth of any podium. A single cage length that is compatible with 28-34T low sprockets brings new versatility to the world's best road component group.

• Model: RD-R9250
• Series: Dura-Ace R9200
• Rear speed: 12
• Average weight: 215g
• Remarks: w/o Bracket spec available
• Firmware update by E-Tube project: ✔
• Total capacity: 37T
• Charging port (pcs): 1
• B-axle (Hollow axle): ✔
• B-axle 2 (Hollow axle): ✔
• Direct attachment (Conventional): ✔
• Direct Mount: ✔
• Fluoric coated link bushings: 4
• Low sprocket (Max): 34T
• Low sprocket (Min): 30T
• Top sprocket (Max): 11T
• Top sprocket (Min): 11T
• Front difference (Max): 16T
• Guide pulley bearing: ✔
• Pulley Teeth: 11
• Top-normal spring type (Shimano Shadow RD): ✔
• Charging cable: EW-EC300
• LED for system status: ✔ (battery, pairing, adjust mode, synchro shift)
• SD300 port (pcs): 1
• Material (Rear derailleur plate): CFPR

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