Dura Ace 50 tooth gear for FC-R9200 ( 12 speed ) cranksets. It is designed for 50/34 tooth gear combination. Hollowglide gear structure reduces weight and maintains strength for better power transfer and more accurate shifting.
Type: ROAD, Total package weight: 195g, Number of teeth on derailleur: 50, Gears: 12-speed, For derailleur combinations: 50/34, Number of gears: 2x12, Gear spacing: 110mm, black
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