Shimano BB-UN300 Square Spindle Bottom Brackets
- Fits JIS square-taper cranksets
- Crankarm fixing bolts sold separately
- Hollow spindle
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Spindle Interface Type: Square Taper JIS
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Bottom Bracket Shell I.D.: 1.37
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BB Shell Width (mm): 73
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Spindle Length: 123
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Defined Color: Black
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BB/Frame Interface: English