Originally Posted by
MrTuner1970
Doesn't look like that to me. Braking surface looks to be aluminum.
Nice that they are tubeless ready. Cool. Too expensive for my wallet, though...sadly. I want a set.
Look closer (and read
this article). The braking surface is indeed carbon overlaid on the alloy "rim cap". The alloy backing serves as a conductive heatsink to the carbon and supposedly moves the heat away from any hotspots.