The Dura-Ace Di2 9150 front derailleur provides precise, faultless gear shifting quickly and smoothly every time, allowing you to change between chainrings with confidence even under high pedalling torque. Specification: Shimano Synchronised shift. Predictable front shifting under high pedalling torque. Top Gear Teeth: 46-55T. Chain Stay Angle: 61-66. Chain Line: 43.5. Weight: 104g.
Best Price: £195.00 from Merlin Cycles