ZIPP CeramicSpeed Bearing Kit - 61903 Modified - ZIPP 177 Rear Hub Shell (includes bearings and one Optie:ZIPP CeramicSpeed Bearing Kit - 61903 Modified - ZIPP 177 Rear Hub Shell (includ 100% acrylic fiber - Unisize

100% acrylic fiber - Unisize (40-46 EU)

Does not include end cap

S2 wheels are built to last long

and other countries and territories

The inside titanium bolt enables you to adjust the initial position of the shift lever within a 40 degrees range for a 100% customized fit

ZIPP CeramicSpeed Bearing Kit - 61903 Modified - ZIPP 177 Rear Hub Shell (includes bearings and one Optie:ZIPP CeramicSpeed Bearing Kit - 61903 Modified - ZIPP 177 Rear Hub Shell (includ 100% acrylic fiber - UnisizeLowest 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