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Corona Shimano Dura Ace 12s NK Size:50t Shimano 105 FC R7100 12 speed crankset Shimano 105 FC R7100 12 speed crankset with 50 34 chainrings and 172 with reflective trim Check that the size matches your crankset's current chainring to maintain the correct pairing Type NK Available Tooth Counts 50t Compatibility FC R9200 and FC R9200 P Compatible Chain Shimano HG 12 speed Pitch Circle Diameter (BCD) 110 mm Material aluminium
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