Keep your Zipp 30/60 rear hub spinning freely with the Zipp CeramicSpeed 61903 bearing kit. Swapping out standard steel bearings for CeramicSpeed ceramics reduces friction, cuts rolling resistance and extends the time between services on your rear wheel.

  • CeramicSpeed ceramic bearings for measurably lower rolling resistance
  • 61903 specification for Zipp 30/60 rear hub shells
  • Ceramic balls resist corrosion and fatigue for long-lasting performance
  • Grease syringe included for correct installation
  • Genuine Zipp-approved CeramicSpeed specification

CeramicSpeed bearings are manufactured to extremely tight tolerances, resulting in smoother rotation and longer service intervals compared to standard steel bearings. Installation is straightforward with the right bearing press tools. The included grease syringe ensures bearings are correctly lubricated from the first ride.

Fits: Zipp 30/60 rear hub shell. Professional installation recommended.

Zipp warrants components for 2 years against manufacturing defects. Warranty claims for this product should be directed to Tune Cycles. Return the item to us with proof of purchase and we will manage the warranty process with the brand on your behalf.
  • CeramicSpeed ceramic bearings deliver lower friction and reduced rolling resistance than standard steel bearings
  • 61903 bearing specification fits Zipp 30/60 rear hub shells
  • Extended service life — ceramic balls resist corrosion and wear for longer than steel alternatives
  • Grease syringe included for correct lubrication during installation
  • Restores smooth, high-performance hub action to well-used Zipp wheelsets
SpecificationValue
Bearing type61903
MaterialCeramicSpeed ceramic
Compatible hubsZipp 30/60 rear hub shell
IncludesBearings and grease syringe
SKU PSI-ZP001918183001
Model # 001.918.183.001
Barcode # 710845751325
Brand Zipp