Clean aesthetic integrates wireless unit, charger, and switch LED status indicator battery indicator pairing adjustment mode
Wider gear ratio range Compatible maximum sprocket: 36T
Wide 36T compatible 12-speed Di2 rear derailleur. Receiving wireless shift signals from the shift lever, the SHIMANO 105 rear derailleur shifts in the blink of an eye thanks to its high-performance motor and optimized link structure. It is the heart of the Di2 system, integrating the charging port, LED indicator, adjustment switch, and more into one compact package. The low-profile design reduces damage from contact and falls.
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