Front derailleur Shimano DURA-ACE Di2 FD-R9150-F Brazed-on 2x11-speed

SHIMANO DURA-ACE FD-R9150-F ensures quick and smooth front shifting under all circumstances, even when you’re shifting to the large chainring while riding out of the saddle. The digital Di2 control of the front derailleur means that the exact same power is used for each shift - reliable and precise shifting. Computer controlled auto trim functions means that you can keep focused on the trail without worrying about shifting. The FD-R8050 is compatible with Shimano Synchronized Shift, so you can fine tune your shifting preferences. A single shifter can control both front and rear shifting.SHIMANO synchronized shiftErgonomic shifting operation without stressRace endurance for less damage in crashQuick and smooth front shifting "under" high pedaling torqueMaintains compact and smooth appearanceCompatible top gear teeth: 50-55TTotal capacity: 16TWeight: 104 gDown SwingChain stay angle: 61-66°Compatible chain HG-EV 11-speed/ HG-X111 E-tube portFirmware update by E-TUBE ProjectLink bushings: 4Mounting: Brazed-OnDi2 - The advantages of Di2 (Digital Integrated Intelligence) are clear for everybody who has tested it: changing gears becomes easier, effortless and faster by simply touching the shift buttons. Control at the top of your fingers. Additional benefits include an automatic trimming front derailleur, unmatched precision plus super easy installation and adjustment. This allows automatic chain guide movement in response to the gear position of the rear derailleur. There is no more need for concentration on trimming when riding. Important: All Shimano Di2 electronic components require the same firmware version. In order to diagnose, read or update firmware, optional device is needed. Operating components with different firmware version may cause malfunction or loss of function.