The Shimano Ultegra FD-R8150 Di2 12-Speed Braze-On Front Derailleur uses pioneering Shimano technology. Smooth shifting is guaranteed thanks to wireless communication with the gear levers.Shimano Ultegra FD-R8150 Di2 12-Speed Braze-On Front Derailleur FeaturesFull and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi synchronized shifting means when a front shift is made the rear mech will automatically correct to the appropriate ratioThe removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused...
Best Price: £249.99 from Leisure Lakes Bikes