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Shimano BB-UN55 Sealed Bottom Bracket

ITEM #shimano-bb-un55-sealed-bottom-bracket

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The Shimano BB-UN55 Sealed Cartridge Bottom Bracket will keep your square-taper crank spinning smooth. Increased durability, aluminum cups, and sealed bearings make a maintenance-free and durable bottom bracket that will last.

Shimano BB-UN55 Sealed Bottom Bracket
  • • Alloy non-drive side cup
  • • Maintenance free sealed cartridge bearings
  • • Durability is improved by 25% compared to UN54 model
Shipping Weight 1.0000