\n\t\t\tShimano Dura Ace Di2 RD-R9250 12 Speed Rear Derailleur
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Features and Benefits:\n\t\t
\n\t\t\t- \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.
\n\t\t\t- \n\t\t\t\tButton on the derailleur for Di2 operations, and LED light denotes synchronized shift mode, setting mode and charge requirements.
\n\t\t\t- \n\t\t\t\tProgrammed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift
\n\t\t\t- \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
\n\t\t\t- \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
\n\t\t\t- \n\t\t\t\tLow profile Shadow derailleur design
\n\t\t\t- \n\t\t\t\tDerailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts
\n\t\t\t- \n\t\t\t\t11-34T wide gear ratio capacity will cater for compact setups as well as the traditional road double
\n\t\t\t- \n\t\t\t\tFull carbon fibre inner and outer pulley plates enhance rigidity and reduce weight
\n\t\t\t- \n\t\t\t\tTitanium B axle bolt for further weight savings
\n\t\t\t- \n\t\t\t\tHigh tolerance cold forged aluminium link plates and body construction is extremely light and durable
\n\t\t\t- \n\t\t\t\tFour self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting
\n\t\t\t- \n\t\t\t\tPulleys are made of tough DuPont Zytel for longer life and less chain noise
\n\t\t\t- \n\t\t\t\t12-speed E-tube Di2 compatible
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\n\t\tOur fastest ever shifting across Shimano's widest ever Dura-Ace gear range, the RD-R9250 is capable of both race wins and personal bests.
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\n\t\tThe Dura-Ace RD-R9250 integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worthy of any podium. A single cage length that is compatible with 28-34T low sprockets brings new versatility to the world's best road component group.
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Technical specifications:\n\t\t
\n\t\t\t- \n\t\t\t\tSpeeds: 12s
\n\t\t\t- \n\t\t\t\tShifting: Electronic, Di2
\n\t\t\t- \n\t\t\t\tMax tooth: 34T
\n\t\t\t- \n\t\t\t\tCapacity: 37T
\n\t\t\t- \n\t\t\t\tColour: Black
\n\t\t\t- \n\t\t\t\tWeight: 215g
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