The Praxis Works Shimano Hollowtech II bottom bracket converter is
designed to be a proper bottom bracket BB for installing Shimano
Hollowtech II cranks in either BB30, PF30, or Specialized’s OSBB road
frames. High-grade Enduro 2437 bearings are fully sealed and are a
fantastic replacement BB for your Shimano™ drivetrain. 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 conversion bb 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 bb converter design also uses a
compressible o-ring on the non-drive side cup to compensate for frame
shell width discrepancies.
• For Shimano Hollowtech II road cranks only.
• Forged & machined heat-treated 7075 T6 Aluminium.
• Enduro 2437 steel cartridge bearings.
• 68mm Road.
• For BB30, PF30 and Specialized Road OSBB Aluminium frames.
• For Specialized OSBB please purchase the 68mm OSBB sleeve.