Shimano 105 SM BBR60 Bottom Bracket BSA Threaded Hollowtech II Road Bicycle Bike

BB-Type: HOLLOWTECH II. Features - Shimano SM-BBR60 BSA. Threaded: BSA. Threaded BB shell width: 68mm. - 1pcs 105 SM-BBR60 Bottom Bracket. Gruppe: Ultegra, 105, GRX. Dura Ace FC-9000. Bottom bracket has smaller, bearings than current model for lightweight.

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