Shimano Dura-Ace SM-BB92-41B

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With an advanced seal construction for smoother rotation, the Shimano Dura-Ace SM-BB92-41B weighs in at a mere 54 grams.

  • Bottom bracket with small ball bearings for lightweight
  • Advanced seal construction for smoother rotation
  • Press Fit
  • 86.5mm BB Shell Width
  • 41mm BB Cup Diameter
  • Inner cover