The PF30 Outboard Angular Contact Bottom Bracket threads together two machined aluminium cups that lock securely into your frame's PF30 shell.
This threaded design eliminates creaking, delivers smoother operation, and extends bearing life by keeping everything stable and properly aligned. Engineered specifically for 24mm spindle cranks—including Shimano and compatible models—this bottom bracket installs directly into 46mm ID PF30 frames without adapters. Angular contact bearings handle lateral loads efficiently, while the outboard design simplifies maintenance and makes bearing replacement quick and straightforward. No tools or special knowledge required.
Features
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Bearings: Enduro Angular Contact
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Colour: Black
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Bottom Bracket/Frame Interface: PF30, Specialized Carbon OSBB*
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Bottom Bracket Shell Width: 61mm* - 73mm
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Bottom Bracket Shell I.D.: 46mm
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Over Bearing Width: 90.5mm in 68mm wide shell
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Crank Spindle Diameter: 24.00mm
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Tool Pattern: 44mm, 16-notch
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Weight: 158g
Note
- FSA MegaExo spindles can be between 24.00mm and 24.07mm in diameter. If your FSA spindle is 24.07mm, this BB will not work! You will need to swap the bearings with our FSA 24.07x37 ceramic hybrid bearings.
- Specialized Carbon OSBB frames with a 61mm shell width need additional cup spacers.
- BB cups produced after July 2018 do not use o-rings.
- Over Bearing Width Dimensions include supplied silicone dust shields.
Contents
- BB Cups with bearings
- 2 - Silicone dust seals
- 2 - 0.5mm crank spindle spacers
- 2 - 1.0mm crank spindle spacers
We reserve the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice.
Weights are based off pre-production products at time of publication. Weights may vary in final production.
