Shimano UN55 Square Taper Bottom Bracket

Shimano UN55 Bottom Bracket Square Taper 68mm x 115mm

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