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Shimano BB-UN300 bottom bracket British thread, 73 - 122.5 mm (LL123)

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  • Detail
    • 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
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