Ultegra 52 tooth derailleur for FC-R8100 ( 12 speed ) cranksets. For cranksets with 52/36 derailleurs. Hollowglide gear structure reduces weight and maintains strength for better power transfer and more precise shifting.
Type: ROAD, Total package weight: 211g, Number of teeth on derailleur: 52, Derailleurs: 12 speed, For derailleur combinations: 52/36, Number of gears: 2x12, Derailleur spacing: 110mm, black
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