Shimano dura ace ultegra 105 r55c4 brake padsalways use shimano brake shoes to ensure top brake performance and to maintain the safety of your shimano brake system shimano brake pads provide the ideal hardness for high stopping power combined with great levels of control suitable for standard direct mount caliper brakes and cantilever brakes for use with aluminium rims featurescompatible with the following shimano modelsbr 9000br 9010br 7900br 7800br 7700br 6800br 6810br 6700br 6600br 650