PF30 Threaded ZERØ Ceramic BB (Black)

BB Installation

Our best solution for replacing OEM PF30 bottom brackets or for new bike builds. The two machined aluminum cups thread together ensuring the bottom bracket remains stable in the frame, increasing bearing life, and simplifying maintenance. This means no more creaking, smoother operation, longer bearing life, and really quick bearing replacement.



Precision Machined


In stock

This item can be purchased from our online partner BICYCLEPARTSDIRECT.COM

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  • Bearings: Enduro ZERØ Ceramic Hybrid
  • Color: Black
  • Bottom Bracket/Frame Interface: PF30, BBRight™ Press Fit, Specialized Carbon OSBB*
  • Bottom Bracket Shell Width (mm): 61mm to 79mm*
  • Bottom Bracket Shell I.D.: 46mm
  • Over Bearing Width: 68mm in 68mm wide shell
  • Crank Spindle Diameter: 30mm
  • Weight: 106g
  • Packaged for retail display
  • Will accept 24mm and 24/22mm cranksets using Wheels Mfg. adapter shims

* Specialized Carbon OSBB with 61mm shell width will need additional 3.5mm cup spacers.

- Over Bearing Width Dimensions include supplied silicone dust shields.

Compatible with the following Bottom Bracket Standards (46mm BB shell inner diameter):

Compatible with 30mm spindle diameter cranksets.

Enduro ZERØ Ceramic Bearings

Enduro ZERØ Ceramic 6806 Bearings

The ZERØ ceramic bearings have ceramic balls and steel races. The balls are Grade 3, Silicon Nitride (Si3n4). These are the roundest balls you can buy without a military license. The races are treated with a black oxide coating, which helps prevent rusting in the bearing. The races are then reground to a mirror finish after this treatment. Finally, they are cryogenically treated for strength before assembly. We also use Silicone VV seals, which is the lightest drag seal available on the market.

Si3N4 balls with 52100 High carbon Chromium Alloy Races with Cryogenic Treatment:
 Cryogenic treatment takes the races down to minus three hundred degree Fahrenheit to normalize the crystalline structure of the material so the races will resist the hardness of the ceramic balls and get the maximum wear potential

  • ABEC-5 rated Ceramic Hybrid bearing with Grade 3 balls
  • Cryogenically treated races will outlast any other bearing on the market
  • Dual lip, groove type seals keep dirt out and 90% fill rate grease in
  • Rheolube special synthetic grease is long lasting and protects against contamination
  • USA made balls are micro-coated with long lasting protection from friction

We back them up with a 1 year warranty.*

  • (PRESS-7) Universal Bottom Bracket Press
  • (WRENCH-BB48-44) Wheels Mfg Double End BB Wrench, 16-notch BB tool - 48.5 / 44mm

Note: if your BB shell is slightly oversize, two BB wrenches may be required to fully tighten cups in frame.