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Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle, Square Taper JIS, 47.5mm Chainline
CR3488
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Product description
Shimano BB-UN300 Square Spindle Bottom Brackets
47.5mm chainline
Fits JIS square-taper cranksets
Crankarm fixing bolts sold separately
Hollow spindle
