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Shimano Ultegra RD-6770 Di2 10-speed Short Cage Road Rear Mech

Shimano Ultegra RD-6770 Di2 10-speed Short Cage Road Rear Mech
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    • 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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