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Praxis Works Shimano BB Converters
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Praxis Works Shimano BB Converters

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Bookmark and Share you have BB30, PF30* (Please See Note Below) or a Specialized OSBB frame, but you need to run a Shimano crank?

No worries. Our Praxis Works Conversion BB is just what you're looking for. Made to fit in either BB30 or PF30 frame, the conversion BB is designed to be rock solid for a Shimano** Hollowtech II crank to be installed in your frame.

Simply press in the longer non-drive-cup, then the shorter drive cup threads into it. As the drive cup threads in, our trademark Collet system expands to a precise limit evenly dispersing pressure for a super tight fit. With both cups connected and our collet set exactly to spec, there is no chance the bearings can come out of alignment or wiggle/walk out of the frame. This design also uses a compressible o-ring on the non-drive side cup to compensate for frame shell width discrepancies.

•For Shimano Hollow Tech II  cranks only
•Forged & machined heat-treated 7075 T6 Aluminum
•68mm Road
•For BB30, PF30, and Specialized Road OSBB frames only
•Non drive wavy washer and drive side outer clip included
•Bearings not included as they are pressed on your Campy ULT crank
•Patent Pending Design
•“Collet” style non-drive cup expansion for wiggle-free press
•Non-Drive O-Ring compensates for frame width discrepancies

• Praxis Bottom Bracket Converters are available for both 68 and 73mm shell sizes.
• The converter works with either BB30 or PF30.
• To fit the converter to a BB30 frame, please remove the plastic sleeve (tube).
• To fit the converter to a PF30 frame, please fit the converter with the plastic sleeve (tube).

Please choose from the options below