Shimano 105 FD-R7150 Di2 12-Speed Braze-on Front Derailleur. SHIMANO Di2 electronic shifting lets you change from the big to small chainrings, or vice versa, whenever you like while minimizing the risk of a dropped chain. Similarly, you can perform rear shifts without the need to trim the front derailleur to avoid chain rub. Full- and semi-synchronized shifting functions can be selected using the E-TUBE app. With digitally accurate electronic shifts and coordinated communication between shifters and derailleurs, the new SHIMANO 105 front derailleur offers the best shifting you've ever experienced.Powerful, accurate, smooth front shifting. Programmed chain guide control by automatic trim. Manual, full- and semi-synchronized shifting program. Top gear teeth capacity: 50-52T. Chain line (mm) 44.5 Chain stay angle deg. 61 - 66 Top gear teeth 50-52T Total capacity 16T Link bushings 2 Firmware update by E-TUBE PROJECT?
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