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.
- Our fastest ever rear shifting, 58% faster than RD-R9150
- LED status indicator
- Battery indicator
- Pairing
- Adjust mode, etc.
- Wider range capacity
- Max. low sprocket: 34T
- CFRP rear derailleur plate
- Rear speeds: 12
- SHIMANO SHADOW RD
- Mount: Direct attachment (conventional): Direct mount
- Max. front difference: 16T
- Total capacity: 37T
- Low sprocket: Max.: 34T, Min.: 30T
- Top sprocket: Max.: 11T, Min.: 11T
- Fluoric coated link bushings: 4
- Pulley: Guide pulley bearing
- Tension pulley bearing
- Teeth: 11
- Sunken type pulley screw
- B-axle: Hollow axle
- Di2 connectivity wired
- Di2 shifting
- Bluetooth® LE custom (*1)|Adjust mode information
- Bluetooth® LE custom (*1)|Di2 battery level
- Bluetooth® LE custom (*1)|Gear position
- Bluetooth® LE custom (*1)|SHIMANO E-BIKE SYSTEMS data items (*3)
- Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE
- Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT
- ANT private (*2)|Adjust mode information
- ANT private (*2)|Di2 battery level
- ANT private (*2)|Gear position
- ANT private (*2)|SHIMANO E-BIKE SYSTEMS data items (*3)
- Firmware update by E-TUBE PROJECT
- SD300 port (pcs): 1
- LED for system status
- Charging cable: EW-EC300
- Average weight: 215
