Shimano
Ultegra 6770 Di2 10sp Rear Derailleur

• Shimano Ultegra 6770 Di2 Rear Derailleur
• 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 - 270g