Shimano Boîtier de Pédalier ITA BB-R9100 Black

The SHIMANO BB-R9100 bottom bracket provides maximum fluidity and efficiency. This is the most efficient model of the Japanese brand, it corresponds to the level of the Dura-Ace transmission but can be installed on all 10 and 11-speed transmissions of the brand. It has even smoother and more sealed bearings than the previous generation, the size of the bearings has also been reduced in order to gain in lightness. Declined here in version for frame with Italian box 70mm wide.