Praxis M30–BB30/PF30 68mm Road Bottom Bracket

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This is our M30 BB for installing a Praxis M30 Road crank into 68mm BB30/PF30 or older Specialized OSBB road frame.   

  • For Praxis M30 Spindle based cranks only. Not for other 30mm cranks.
  • For 68mm BB30,  PF30 or older Specialized OSBB road frames
  • Forged & machined heat-treated AL Cups
  • 30mm Drive bearing /28mm NonDrive bearing |  Steel bearings
  • Praxis M30 BB tool required for installation
  • Note : This BB cannot be used for MTB Cranks.


  • Patented Pending expanding elastomer collet design
  • “Rubber Collet” drive cup expansion for wiggle-free press
  • Non-Drive O-Ring compensates for frame width discrepancies