BB-UN300 Square Taper Bottom Bracket w/fixing bolt
$25.00
The Shimano BB-UN300 is a simple and reliable square taper bottom bracket designed to replace both the BB-UN26 and BB-UN55 models. It features sealed cartridge bearings and a durable Cr-Mo axle for consistent performance.
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Versatile Configurations: Available in specific versions to suit various builds, including the BB-UN300-K for chain cases and the BB-UN300-E for E-type front derailleur compatibility.
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