CeramicSpeed PF4630 Bottom Bracket: PF30/BBright/386EVO, 30mm Spindle, Red

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A bottom bracket that offers bearing with extremely low friction, improved power transfer, and a service life that far exceeds traditional steel bearings.

  • Grade 3 Silicon Nitride balls
  • Hardened races
  • Reinforced polyamide cage and non-contact seals
  • Hand built in Denmark