M30–OSBB 2010-2013 68mm ROAD (Specialized)

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  • $128.10

  • IMPORTANT READ – This version for older Specialized 2010-2013 “OSBB” 61.5mm frames.
  • For Praxis M30 Spindle based cranks only.  Not for other 30mm cranks
  • Forged & machined heat-treated AL Cups
  • 30mm Drive/28mm NonDrive | Steel bearings
  • Not for BBRight or BB386EVO frames
  • Use M30 BB tool for installation
  • Frame Guide HERE
  • Bearing FAQ HERE
  • Warranty


For installing Praxis M30 spindle based cranks into older Specialized’s 2010-2013 OSBB road frames. Our patent pending design keeps the cartridge bearings outboard of the frame right on Shimano™ 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, 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.