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GB Cycles
GB Cycles
Praxis Works Sram GXP BB Converters
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Praxis Works Sram GXP BB Converters

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Designed to be a proper BB for installing SRAM GXP/ISIS2 cranks in either BB30, PF30, or Specialized’s OSBB road frames. Our patent pending design keeps the cartridge bearings outboard of the frame right on SRAM 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.

•For SRAM GXP/ISIS2 cranks.
•Also for Oval Concepts 400/500/700series GXP cranks
•Forged & machined heat-treated 7075 T6 Aluminum
•Steel cartridge radial bearings
•68mm Road version / 73mm MTB Version
•For BB30, PF30, and Specialized Road OSBB

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