http://www.mavic.com/sites/default/f...Systems_GB.pdf
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CD Couche Dure. This process creates a micro surface hardness of the rim. It slows down braking wear and improves its durability.
CERAMIC 2™ A thermic shield, harder than aluminum, coats the rim walls.
- Reduction of braking distances especially in the rain.
- Greater resistance to wear through braking.