Shimano UN300 Square Taper English Bottom Bracket (Silver) (BSA) (68mm) (122.5mm) (50mm Chainline)

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Shimano BB-UN300 Square Spindle 68mm Bottom Bracket

Features:

  • Fits JIS square-taper cranksets
  • Crankarm fixing bolts sold separately
  • Hollow spindle
  • 50mm chainline

Specifications:
Frame Interface: BSA/English Threaded
Spindle Interface: Square Taper JIS
Bottom Bracket Shell ID: 1.37
Shell Width: 68mm
Spindle Lengths: 122.5mm
Color: Silver
Weight: TBD