Shimano RD-R7150 105 Di2 12-speed Rear Derailleur

Experience faster, more accurate rear shifting with wireless Di2. A more compact design integrates the wireless unit, charging port and function button. You can check the battery level and Bluetooth/ANT pairing success with your cycle computer/smartphone/tablet. Plus select your preferred shift mode and view adjustment mode information (if you wish to tweak or tune your rear derailleur).A new level of performance for SHIMANO 12-speed road rear derailleursWide 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, adjustment switches and more integrated into a compact package. A low-profile design reduces damage from contact and falls.Key Features:Compact design includes an integrated wireless unit, charger, switchLED status indicatorBattery indicatorPairingAdjust mode, etc.Wider range capacityMax. low sprocket: 36T