Shimano UN54 Bottom Bracket

Shimano UN54 Bottom Bracket Review

Shimano UN54 Bottom Bracket Feature

• Maintenance free sealed cartridge unit
• 31-Grams, tapered spindle
• The standard for sealed-bearing square taper bottom brackets

A good quality bottom bracket for traditional chainsets. Super-accurate bearings for smooth operation and improved durability. Durable, hard-wearing sealed cartridge bottom bracket with square tapered spindle fitting. Lightweight hollow spindle. Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long bearing life. Fast and easy installation without adjustment. Narrow body allows clearance for cable routing under the bottom bracket.