Shimano Dura Ace Di2 RD-R9250 12 Speed Rear Derailleur

\n\t\t\tShimano Dura Ace Di2 RD-R9250 12 Speed Rear Derailleur

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• \n\t\t\t\tThe rear derailleur is now the brains of the system with wireless connectivity to the shifters. It acts as the point the system is charged, provides ANT+ connection to 3rd party devises and replaces the handlebar junction.
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• \n\t\t\t\tButton on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirements.
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• \n\t\t\t\tProgrammed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift
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• \n\t\t\t\tSynchronized Shift designed, developed to choose the next biggest or lowest gear ratio irrespective of whether a gear change needs to be made by the front or rear derailleur
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• \n\t\t\t\tThe removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching
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• \n\t\t\t\tLow profile Shadow derailleur design
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• \n\t\t\t\tDerailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts
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• \n\t\t\t\t11-34T wide gear ratio capacity will cater for compact setups as well as the traditional road double
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• \n\t\t\t\tFull carbon fibre inner and outer pulley plates enhance rigidity and reduce weight
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• \n\t\t\t\tTitanium B axle bolt for further weight savings
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• \n\t\t\t\tHigh tolerance cold forged aluminium link plates and body construction is extremely light and durable
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• \n\t\t\t\tFour self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting
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• \n\t\t\t\tPulleys are made of tough DuPont Zytel for longer life and less chain noise
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• \n\t\t\t\t12-speed E-tube Di2 compatible
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• \n\t\t\t\tSpeeds: 12s
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• \n\t\t\t\tShifting: Electronic, Di2
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• \n\t\t\t\tMax tooth: 34T
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• \n\t\t\t\tCapacity: 37T
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• \n\t\t\t\tColour: Black
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• \n\t\t\t\tWeight: 215g
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