Shimano's R55C4 Brake Pads for carbon rims are specifically designed for use with Shimano or Shimano-compatible brake shoes and carbon rims. These pads are made with a special compound that improves modulation and reduces brake fade during heat build-up. Making long-fast descents with carbon wheels a much safer ordeal. Replace those old worn out pads and restore the performance and stopping power you deserve. Stay safe, feel secure and stop-on-a-dime with the Shimano R55C4 Brake Pads for carbon rims.