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BB30 ADAPTERS CENTER MOVEMENT - STYLE#1
(For SRAM/TRUVATIV GXP MTB CRANKSETS)
Si3N4 CERAMIC BEARINGS
Technical specifications:
1) Allows the use of Shimano Hollow II seals on BB30 frames
2) CNC with black anodized alloy caps
3) Net weight ≈ 90 grams (hybrid version)
Si3N4 spheres are widely used in precision bearings in the aerospace industry,
for machine tools, measuring instruments,
mechanical centrifuges, radar and missiles, pumps, compressors.