SHIMANO RD-6770 ULTEGRA DI2 10 SPEED REAR DERAILLEUR SS SHORT CAGE

With Di2 technology shifting is easy and 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 and effortless to shift
The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts
Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts
11-28T wide gear ratio capacity will cater for compact setups as well as the traditional road double
High tolerance cold forged aluminium link plates and body construction is extremely light and durable
Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting
10-speed Ultegra Di2 compatible
Weight is 270 grams

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