Shimano Dura-Ace Di2 R9150 11 Speed Front Derailleur

• Di2 Electronic Shifting
• No cables to wear out or become contaminated
• Ergonomic shifting operation without stress
• CPU controlled automatic trimming
• SHIMANO synchronized shift
• Race endurance for less damage in a crash
• Quick and smooth front shifting "under" high pedaling torque
• Maintains compact and smooth appearance
• Mount: Braze On
• Weight: 104g.