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Amazon.com : Shimano Dura-Ace FC-R9100 Crankset - 172.5mm, 11-Speed, 50/34t, 110 Asymmetric BCD, Hollowtech II Spindle Interface, Black : Sports & Outdoors
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Actual Weights: Fair Wheel Bikes weighs the new Shimano Dura-Ace R9200 Di2 Wireless 12 Speed Group - Bikerumor
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