Shimano BB-UN55 sealed bottom bracket 68 - 118mm

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Shimano UN55 Bottom Bracket Square Taper 68mm x 118mm

Square taper bottom bracket for traditional chainsets with high accuracy bearings for smooth operation and improved durability

• Durable, hard-wearing sealed cartridge 
• Narrow body allows clearance for cable routing under the bottom bracket
• Lightweight hollow, square tapered spindle fitting
• Maintenance-free sealed cartridge bearing assembly 
• Fast and easy installation without adjustment