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 Right - Reversible: No -

Right - Reversible: No - Hardware: Steel

because that’s how it should be

Matched with the new DebonAir+™ air spring and new premium fender compatibility

48mm - Headset: FSA integrated conical

Compatible only with Shimano Micro Spline cassettes

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 Right - Reversible: No -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