A new level of performance for Shimano 12-speed road rear derailleurs. 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, adjustment switches and more integrated into a compact package.
FEATURES
Compact design includes an integrated wireless unit, charger and switch.
A low-profile design reduces damage from contact and falls