The Shimano 105 RD-R7150 Di2 12-speed 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 Shimano Di2 system with the charging port indicator LEDs adjustment switches and more integrated into a compact package. Low-profile Shimano Shadow RD design reduces damage from contact and falls Receive the wireless shifting signal from the shift lever Check the battery level and Bluetooth/ANT pairing success with your cycle computer/smartphone/tablet Allows selection of preferred shift mode and view adjustment mode information (if you wish to tweak or tune your rear derailleur) Smartphone/tablet connectivity via E-TUBE PROJECT
| Largest Cog | 36 |
| Rear Der/Shifter Compatibility | Shimano Road Di2 |
| Rear Derailleur Mount Type | 10x1 Standard |
| Drivetrain Speeds | 12 |
| Chain Wrap Capacity (teeth) | 41 |
| Color | Black |
| Weight | 302 |
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