Shimano BSA SM-BBR60 bottom bracket

The SHIMANO SM-BBR60 bottom bracket corresponds to the Ultegra 6800 and 105 transmissions. It is equipped with new bearings with a friction rate reduced by 50% compared to the previous model. Offering increased durability and fluidity, it is equipped with a screw thread to be mounted on BSC type frames, and is compatible with SHIMANO cranksets benefiting from the Hollowtech II construction.