CeramicSpeed Wheel Bearing Upgrade Kit: Zipp-9 (NSW Hubsets). CeramicSpeed cartridge bearing kits for wheels is an upgrade option that provides extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings.

  • Grade 3 Silicon Nitride balls
  • Hardened races
  • Reinforced polyamide cage and non-contact seals
  • Hand built in Denmark
  • High resistance to poor lubrication
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