Shimano BB-UN300 Square Type Bottom Bracket

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SHIMANO quality/performance cartridge bearing square bottom bracket.

A good quality bottom bracket for traditional chainsets with super-accurate bearings for smooth operation and improved durability.

  • Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting
  • Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life
  • Fast and easy installation without adjustment
  • Narrow body allows clearance for cable routing under the bottom bracket
  • Length - 107
  • Diameter - 68