Shimano Dura-Ace 9000 R55C4 Brake Pad Inserts - Pair This pair of Shimano Dura-Ace 9000 R55C4 Brake Pad inserts are designed for aluminium braking surfaces, offering improved braking performance and modulation in all weather conditions, dry or wet. The compound also gives an extended wear life. To install, these pads simply slide into the existing brake caliper pad housing and are secured in place by the supplied screws. Please note that this pack contains one pair of brake pads which is enough for one brake caliper. If both front and rear calipers need new brake pads please purchase two packs. Primarily designed for the Shimano Dura-Ace 9000 brake calipers these pads are also compatible with several other Shimano models. Please see below for the full compatibility list. Compatible Brake Caliper Models BR-R9110-F, BR-R9110-R, BR-R9110-RS, BR-R9100-F, BR-R9100-R, BR-R9100-RS, BR-9010-F, BR-9010-R, BR-9010-RS, BR-9000, BR-7900, BR-7800, BR-7700, BR-R8010-F, BR-R8010-R, BR-R8010-RS, BR-R8000, BR-R7000, BR-6810-F, BR-6810-R, BR-6810-RS, BR-6800, BR-6700, BR-6600, BR-6500, BR-5810-F, BR-5810-R, BR-5810-RS, BR-5800, BR-5710, BR-5700, BR-5600, BR-5501, BR-5500, BR-R650, BR-R600, BR-R561, BR-R560, BR-CX70 Compatible Series DURA-ACE R9100 Series, DURA-ACE 9000 Series, DURA-ACE 7900 Series, ULTEGRA R8000 Series, ULTEGRA 6800 Series, ULTEGRA 6700 Series, ULTEGRA 6600 Series, ULTEGRA 6500 Series, SHIMANO 105 R7000 Series, SHIMANO 105 5800 Series, SHIMANO 105 5700 Series, CYCLOCROSS / ON-ROAD DISC BRAKE, SHIMANO