The SHIMANO Di2 electronic shifting allows you to switch from large to small chainrings, or vice versa, whenever you want, minimizing the risk of chain drop. Similarly, it is possible to operate the shifting without needing to trim the front derailleur to avoid chain rub. The synchronized and semi-synchronized shifting functions can be selected via the E-TUBE app. With digitally precise electronic shifting and coordinated communication between the derailleur and front derailleur, the new SHIMANO 105 front derailleur offers everyone the best shifting action ever experienced.

• Powerful, precise, and smooth front derailleur
• Programmed chain guide control with automatic adjustment
• SHIMANO SYNCHRONIZED SHIFTING
• Manual, synchronized, and semi-synchronized shifting program
• Maximum sprocket teeth: 50-52T