Praxis Works 68mm (Road) Converter BB30/PF30 Shimano Road

THE PRAXIS CONVERSION BOTTOM BRACKET

Our conversion BB is designed to be a proper BB for Shimano™ Hollowtech 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.

• MFG: Forged & machined heat-treated 7075 T6 Aluminum
• BEARING: Cartridge with steel ball, high-grade grease and fill
• SIZE & USE: 68mm Road / 73mm Mountain
• FRAME SPEC: For BB30, PF30, and now Specialized OSBB!
• COMPATIBILITY: For Shimano™ Hollowtech cranks only.

BB30/PF30 Directions

 

OSBB Directions

• Not for SRAM/GXP or Campy/Ultra Torque cranks
• Not for BBRight or BB386EVO frames.
• 68mm cannot be used for MTB Cranks.
• New "Wiring windows" only for the BB30 version
• MTB Guides-ISCG05 Good, ST Mounted Good, ISCG03 Not Good.
• Felt F1/F2/Z1, BMC Impec, and 2009 Jamis Zenith SL are "Custom BB30" and not compatible.