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
• Includes 4 X 61903 + 2 X 61803 bearings
• Fits NSW (NOT DISC) Before mid 2018 (1st gen)