If the discs and pad surfaces are worn unevenly they can be machined flat and parallel again. A fixture should be made to mount the disc on its mounting flange, and both sides should be machined at the same setting. Failure to do this may result in thick / thin which will cause pedal “pulsing” and vibration. For H13.5 discs only brown antioxidant paint is available from
AP Racing  (CP2872-145) and should be “touched-up” as required.

NOTE:
Do not attempt to degrease the material with any solvents. If a Carbon disc is contaminated with oil or other please contact AP Racing for advice