ZIPP CeramicSpeed ​​freewheeling and storage kit for 177 series hub SRAM XD

- 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