Shimano ultegra 6800 brake set shimano have once again been trickling down technology from the dura ace groupset with the 6800 brakes now benefiting from the dual pivot design resulting in much stronger braking performance shimano claim that this braking force is 10 stronger than the previous generation ultegra brake this extra braking power is sure to give you some extra confidence on the downhills new brakes give smooth light operation with excellent modulation greater braking power mod