Shimano Ultegra R8170 Di2 Hydraulic Disc STI Levers & R8170 Flat Mount Disc Brake Set - 12 Speed. ST-R8170-R 12s Shifter Lever. Kit contains bled ST-R8170 STI, BR-R8170 flat mount brake callipers with pads, hoses and mineral oil (without rotors or adapters).
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