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Praxis Works M35 Conv BB30/PF30

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About This Product: Praxis Works M35 Conv BB30/PF30


The Praxis Works M35 Conv BB30/PF30 works with the Oval 600 M35 MTB crankset from Praxis. Their patent-pending design keeps the cartridge bearings outboard of the frame right on spec for greater rigidity and free of frame/c-clip tolerance issues that other systems deal with.

Simply press in the longer non-drive-cup, then the shorter drive cup threads into it. As the drive cup threads in, Praxis' trademark Collet system expands to a precise limit, evenly dispersing pressure for a super tight fit. With both cups connected and the 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 the OVAL 600 M35 spindle based MTB crank
  • Forged & machined AL Cups –  Steel cartridge bearings
  • This M35BB only for 73mm MTB BB30/PF30 frames
  • For BB30, PF30 frames

Additional Information

Barcode 144446
Special Shipping Group No