Wheels Manufacturing PF30 Outboard Bottom Bracket (24mm Cranks) (Shimano) (Angular Contact)

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Wheels Manufacturing's PF30 "press fit" Outboard bottom bracket will give you all of the same benefits as their well-loved Outboard style BBs. 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.

Specifically designed for installing 24mm spindle diameter cranks (Shimano, FSA, Etc.) in PF30 & Specialized Carbon OSBB frames without the need for any adapters.


  • Bearings: Enduro Angular Contact
  • Color: Black
  • Bottom Bracket/Frame Interface: PF30, Specialized Carbon OSBB
  • Bottom Bracket Shell Width (mm): 68mm - 73mm
  • Bottom Bracket Shell I.D.: 46mm
  • Crank Spindle Type: Shimano Hollowtech II, FSA MegaExo, RaceFace EXI
  • Crank Spindle Diameter: 24mm
  • Weight: 153g

Enduro Angular Contact Bearings:
In standard radial bearings, only 3 or 4 balls make contact during the load, at any given time. In Angular Contact (A/C) bearings, ALL balls are engaged and spread the force over a larger surface area, to decrease friction, and minimize wear. Wheel play can be adjusted out of the hub, to giving a more stable wheel, making it easier to adjust disc brakes, while still spinning freely.

High precision balls are within 10/1,000,000″ round, twice as round as the industry standard, at itís highest level. Filled with Rheolube special synthetic grease formulated in the USA, the balls are micro-coated with long lasting protection from friction. "LLB" dual lip groove seals and another external seal with dual lips on both sides and made from the best Silicone material guards from water and dirt penetration.

This product was added to our catalog on December 1, 2015.