Shimano - Ultegra Di2 6870 Rear Gear - 11 Speed

Product Description

Shimano Ultegra Di 2 6870 11 Speed Rear Gear Precise, lightning-fast shifts across an 11-speed cassette, whatever the conditions, with just a button click. With Di 2 technology shifting is easy & precise, just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear. Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth & effortless to shift. The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion & stretching, but provides effortless gear shifts. Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts SS: 11-28T wide gear ratio capacity will cater for compact setups as well as the traditional road double. GS: 11-32T wide gear ratio capacity will cater for compact setups as well as the traditional road double High tolerance cold forged aluminium link plates & body construction is extremely light & durable Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting