shimano sm-bb91 press fit bottom bracket

by: shimano

 

  • Complete press-fit bottom bracket assembly for Shimano HollowTech II MTB cranks
  • Cups are made from fibre reinforced polymer material which reduces the risk of frame noise and damage
  • Set includes left and right hand cups, 2.5 mm spacer, inner cover, and inner O-rings
  • Sealed cups keep out dirt and water
  • Maintenance free
  • Compatible with 89.5 mm (with 2.5 mm spacer) and 92 mm shells
  • 41 mm cup diameter
  • Easy press-fit installation



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