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Shimano SM-BB71 Ultegra Press Fit Bottom Bracket

  • Complete Ultegra level press-fit bottom bracket assembly for Shimano HollowTech II road cranks

  • Cups are made from fibre reinforced polymer material

  • Set includes left and right hand cups, inner cover, and inner O-rings

  • Sealed cups keep out dirt and water

  • Maintenance free

  • Compatible with 86.5mm shells

  • 41mm cup diameter

  • Easy press-fit installation
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