MTB 73mm- BB30/PF30 (SRAM/GXP)

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  • $128.10


Designed to be a proper BB for installing SRAM GXP/ISIS2 cranks in either BB30 or PF30 mountain frames. This includes cranks from SRAM/TRUVATIV/QUARQ, and Oval Concepts. 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/Truvativ/Quarq GXP/ISIS2, and Oval Concepts 400/500/700series cranks.
  • Designed precisely to SRAM bearing stance & chain line spec.
  • Forged & machined heat-treated 7075 T6 Aluminum
  • Enduro 2437/2237 steel bearings
  • For 73mm BB30 or PF30 mountain frames
  • Not for BBRight,BB386EVO, BB86, BB92 frames
  • 68mm version cannot be used for MTB Cranks
  • MTB Guides-ISCG05 Good, ST Mounted Good, ISCG03 Not Good
  • BEFORE PURCHASE – PLEASE READ FRAME GUIDE HERE
  • FAQ FOR THIS SPECIFIC BB HERE
  • INSTALLATION INSTRUCTIONS HERE
  • PLEASE READ Warranty