UN55 English Threaded 68mm Bottom Bracket

Availability: In stock (2)

Shimano BB-UN55 Square Spindle Bottom Brackets

*Available in various Spindle Lengths*

  • Fits JIS Square-Taper Cranksets
  • Hollow spindle
  • Crankarm fixing bolts not included
  • Fits 68mm English Threaded BB Shell
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