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BB-UN300 Square Type Bottom Bracket
BB-UN300 Square Type Bottom Bracket

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Product Description

The Shimano BB-UN300 Bottom Bracket is a quality square type bottom bracket for your standard chainset. Get improved durability and a smooth ride.

  • Cartridge bearing square bottom bracket
  • MTB standard structure
  • Better chain line stability with chain line stabilizer
  • Tourney A070 Series
  • Shimano high quality/performance
  • Adapter material: Aluminum
  • Bottom Bracket Shell I.D.: 1.37
  • Threaded BB shell width: 68mm
  • BB/Frame Interface: English
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