Shimano Dura Ace 9150 Di2 Front Derailleur Braze On

Shimano Dura Ace 9150 Di2 Front Derailleur Braze On. It's not often in cycling that a true game changer comes along, but upon its introduction that's exactly what Shimano Di2 was. By replacing traditional mechanical shifting with computer controlled servo motors, Di2 fundamentally changed how bikes shift gears. Over the years Shimano has continually refined its technology, and they've done so again with Shimano Dura Ace 9150. Often overlooked, the front derailleur brings arguably the biggest advancement over the previous generation. The derailleur keeps the same unmatched shift quality and smooth performance even under torque of previous iterations, but now introduces Syncro Shift customizable shifting. First introduced on XTR Di2, Syncro Shift again changes the way bikes will shift gears. The feature which can be disabled and customized simplifies shifting by automatically shifting the front derailleur in certain gear combinations to help the rider maintain optimal cadence and power. With the same compact shape and a weight of just 104g, the 9150 front derailleur isn't just a next step, it's a quantum leap in technology.