Shimano BB-UN300 British Thread 68-122.5mm LL123 Bottom Bracket

Key Features:

• 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
• Maintenance-free sealed cartridge bearing assembly keeps out dirt, mud, and water for long-bearing life
• Fast and easy installation without adjustment
• The narrow body allows clearance for cable routing under the bottom bracket