Praxis Works
68mm M30 Bottom Bracket Conversion For BB30/PF30

Designed to be a proper BB for installing M30 spindle based cranks in either BB30, PF30, or Specialized’s OSBB 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.

SPECIFICATIONS

For M30 Spindle based cranks only.

Forged & machined heat-treated 7075 T6 AL Cups

Steel cartridge bearings

68mm Road version / 73mm MTB Version

For BB86/92, BB30, PF30, and Specialized Road OSBB Aluminium frames

Not for BBRight or BB386EVO frames

68mm cannot be used for MTB Cranks

MTB Guides -ISCG05 & ST Mounted Good, ISCG03 Not Good

BB86/92 frames need to be check with the frame gauge before fitting

TECHNOLOGY & NOTES

• Patent Pending Design
• “Collet” style non-drive cup expansion for wiggle-free press
• Non-Drive O-Ring compensates for frame width discrepancies