The BB-UN55 bottom bracket British thread 73-118 mm is a quality bottom bracket designed for traditional chainsets. Its super-accurate bearings mean you're guaranteed a 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
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