Wheels Manufacturing BB30 to Outboard Bottom Bracket (Steel Bearing) (Shimano)

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Wheels Manufacturing's BB30 Outboard bottom bracket will give you all of the same benefits as our 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 BB30 frames without the need for any adapters.


  • Converts BB30 shells (42mm ID- 68mm road/73mm mountain) to accept most 24mm or 24/22mm spindle cranks
  • For 24mm (Shimano, FSA, Race Face, etc) for installation into BB30 frames without the need for adapters
  • Includes anodized aluminum cups with Enduro sealed bearings
  • Base: Enduro ABEC 3 sealed bearings

Enduro ABEC-3
Color: Black
Bottom Bracket/Frame Interface: BB30, Specialized Alloy OSBB
Bottom Bracket Shell Width (mm): 68mm - 73mm
Bottom Bracket Shell I.D.: 42mm
Crank Spindle Type: Shimano Hollowtech II, FSA MegaExo, RaceFace EXI
Crank Spindle Diameter: 24mm
Weight: 153g

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