BB-R60 Ultegra 6800 bottom bracket, English thread cups

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• HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency
• HollowTech II integrated bottom bracket seal design has minimal bearing interface ensuring smooth rolling and increased durability
• Use TLFC37 or TLFC25 in conjunction with TLFC36 adaptor tool for installation and removal