Shimano UN-55 Bottom Bracket
$27.95
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The Shimano UN-55 Bottom Bracket at J&R Bicycles is a high-quality sealed cartridge bottom bracket featuring a durable aluminum alloy non-drive side cup. As far as ENG-threaded BBs go, Shimano’s square-taper bottom brackets are the unofficial standard and offer unmatched reliability and performance. This BB will fit JIS square-tapered cranksets. Specifications: MODEL NO: BB-UN55 SERIES: SHIMANO
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