Shimano BB-UN300 Square Taper bottom bracket for cranks with JIS Square Taper mounting. Suitable for frames with BSA thread 73 mm housing width.

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
• Narrow body allows clearance for cable routing under the bottom bracket

• Model: BB-UN300
• BB-Type: Square Taper
• Threaded: BSA
• Threaded BB shell width: 73mm

• 118mm

• Steel