Rear Derailleur. Di2. 2x12-speed. A new level of performance for SHIMANO 12-speed road rear derailleurs. Wide 36T-compatible 12-speed Di2 rear derailleur. Receiving the wireless shifting signal from the shift lever, the SHIMANO 105 rear derailleur completes a shift in the blink of an eye with its high-performance motor and optimized link structure. This is the hub of the Di2 system, with the charging port, indicator LEDs.
- Compact design includes an integrated wireless unit, charger, switch
- LED status indicator: Battery indicator, Pairing, Adjust mode, etc.
- Wider range capacity: Max. low sprocket: 36T
- Average weight: 302 g
- Max. front difference: 16T
- Total capacity: 41T
- Low sprocket: 36T
- Low sprocket: 34T
- Top sprocket: 11T
- Pulley: Teeth - 11
