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Praxis Works Conversion Bottom Bracket

Praxis Works Conversion Bottom Bracket
$95.00 - $107.00
Please select options


Best described by the Praxis Works website itself:

"Designed to be a proper BB for installing Shimano™ Hollowtech II 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."

Part Numbers

Option UPC MPN Store SKU
SRAM MTB 73mm GXP/ISIS2 (73-3201) 854053003460 73-3201
Shimano MTB 73mm BB30/PF30 (73-3001) 854053003941 73-3001 49780
Shimano Road 68mm M30 (68-4001) 854053003583 68-4001
Shimano Road 68mm BB30/PF30 (68-3001) 854053003149 68-3001