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Instantly responding to wireless shift commands, its high-performance motor and optimized linkage deliver lightning-fast gear changes. As the central hub of the Di2 system, it neatly integrates the charging port, indicator LEDs, and adjustment controls.
- Total capacity : 41T
- Direct Attachment
- Number of pulley teeth : 11
- Rear Speed : 12
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Review Shimano 105 Di2 RD-R7150 12-Speed Rear Derailleur
