A great option for cyclists using Shimano cartridge-type road brake pads on carbon braking surfaces. They are compatible with a range of models including: Dura-Ace BR-9000, BR-9010, BR-7900, BR-7800, BR7700 Ultegra BR-6800, BR-6700, BR-6600, BR-6500 105 BR-5800, BR-5700, BR-5500 Non-Series BR-R600, BR-R561, BR-R560, BR-CX70. The R55C4 model is a high-end race brake pad that delivers excellent performance in wet and dry conditions.