RD-R8150 Ultegra Di2 12-speed rear derailleur E-tube

\n\t\t\tShimano Ultegra RD-R8150 Di2 12 Speed Rear Derailleur E-Tube

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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 devices
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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\tSleek appearance with Low profile Shadow design construction reduces risk of damage in a crash
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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\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\t12-speed E-tube Di2 compatible
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• \n\t\t\t\tWide gear ratio compatible up to 11-34T
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