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ZIPP CeramicSpeed Bearing Kit - 61903

ZIPP CeramicSpeed Bearing Kit - 61903

Waste no Watts!

In the never ending quest to make athletes faster on their bikes, Zipp is constantly testing and refining. As you pedal your bike, there are a known set of resistive forces continually stealing energy away from your efforts. One of these forces is drivetrain friction.

To achieve the perfect balance of performance, durability and cost, Zipp hubs are machined to the closest tolerances possible and are supplied standard with steel bearings of the highest grade available. But for cyclists looking for that extra advantage, Zipp has partnered with CeramicSpeed to create specific ceramic upgrade bearing kits for use in Zipp hubs and free hub driver bodies.


  • Low resistance hybrid ceramic (ceramic balls and steel cages)
  • Measurable wattage savings between 1.5 and 9 watts
  • suitable for Zipp 188 v9, 30 and 60 rear hubs
  • comes with 2x 61903 bearings (ID 17mm / OD 30mm) & grease syringe

Included in delivery: 1x Kit (two bearings & one grease syringe

Fact Sheet of ZIPP CeramicSpeed Bearing Kit - 61903

Product Name: ZIPP CeramicSpeed Bearing Kit - 61903
Manufacturer: ZIPP
Item Code: ZIP460666
activity: Cycling
Bearings type: Radial Bearing, Ball Bearing, for Wheels/Hubs
bearings inner Ø: 17 mm
Bearings outer Ø: 30 mm
Bearings width: 7mm
bearing material: Hybrid
Model year: 2024
Collection: Full year
manufacturer item code: 00.1918.183.001
Manufacturer page: http://www.zipp.com