- Our fastest ever rear shifting, 58% faster than RD-R9150
- Compact design includes an integrated wireless unit, charger, and switch
- LED status indicator
- Battery indicator
- Pairing
- Adjust mode, etc.
- Wider range capacity
- Weight: 262 g
- Rear speeds: 12
- Top-normal spring type - SHIMANO SHADOW RD
- Direct Mount
- Max. front difference: 16T
- Total capacity: 39T
- Low sprocket Max.: 34T
- Low sprocket Min.: 30T
- Top sprocket Max.: 14T
- Top sprocket Min.: 11T
- Fluoric coated link bushings: 4
- Pulley|Guide and Tension pulley bearings
- Pulley Teeth: 11
- Sunken type pulley bolt
- B-axle / B-axle 2: Hollow axle
- Di2 connectivity wired: Di2 shifting
- Di2 connectivity wireless: Di2 shifting
- Di2 connectivity wireless Bluetooth LE custom: Adjust mode information / Di2 battery level / Gear position / SHIMANO STEPS data items (*3) / Compatible with E-TUBE RIDE / Compatible with E-TUBE PROJECT
- Di2 connectivity wireless ANT private: Adjust mode information / Di2 battery level / Gear position / SHIMANO STEPS data items (*3)
- Firmware update by E-TUBE PROJECT
- SD50 port not available
- SD300 port
- SD50/SD300 connector not available
- LED for system status
- Charging port
- Charging cable: EW-EC300
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