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Shimano BB-UN55 Cartridge Bottom Bracket

Item No. »  SH-BBUN55

MSRP: $23.49

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The UN55 bottom bracket is an improvement over the tried and true UN54. The sealed cartridge unit makes a great replacement part for hybrids, road bikes and older mountain bikes. The sealed cartridge bearings lock out contaminants like water and dirt, helping this bottom bracket last longer....

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