Zipp Zipp Ceramicspeed Bearing Kit - 61803 Modified - Zipp 77 Front Hub Shell And 177 Rear Free Hub Body

- lowest resistance hybrid ceramic (ceramic balls and steel cages) available - measurable wattage savings between 1.5 and 9 watts per bearing set depending on the level and condition of your existing bearings - kits include freehub body with ceramicspeed bearings pre-installed for easy installation onto the wheel - available in sram campagnolo® and xdr driver versions specifically for zipp rear hubs - material (hub - bearings): ceramic