SHIMANO Ultegra Bottom Bracket BB-R60
|Options||British thread (1.37" x 24TPI) for 68mm BB Shell
Italian thread (36 x 24TPI) for 70mm BB shell
|Description||HollowTech II integrated bottom bracket uses a wider bearing placement and larger axle diameter for increased stiffness and efficiency.
Seal design has minimal bearing interface ensuring smooth rolling and increased durability
Minimal bearing interface gives superbly smooth rolling
As with any product, specification is subject to change without prior notification. You are advised to confirm current specification before buying.