Shimano BB-R60 Ultegra 6800 bottom bracket, English thread cups
- 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.
- English Thread Cups