Shimano Bb-un300 Bottom Bracket 73x113mm Ll W/o Fixing Bolts

Pickup available at 132 Union Road

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The quality and performance-oriented Shimano BB-UN300 cartridge bearing bottom bracket features a JIS square taper mount and is designed for frames with BSA thread and 73 mm shell width. A stabilizer ensures a constant chain line.


  • Square Type Bottom Bracket
  • Quality/performance cartridge bearing square bottom bracket
  • Better chainline stability with chain line stabilizer


  • Size: 73 x 113mm
Only 1 left in stock!

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