ZIPP CERAMICSPEED BEARING KIT - 61803 MODIFIED - ZIPP 77 FRONT HUB SHELL AND 177 REAR FREE HUB BODY (INCLUDES BEARINGS AND ONE GREASE SYRINGE)

For cyclists looking for that extra advantage. Ceramic Speed bearings. Use with ZIPP hubs and free hub driver bodies. Lowest resistance hybrid ceramic, ceramic balls and steel cages available. Measurable wattage savings between 1.5 and 9 watts per bearing set.