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Shimano BB-UN55 bottom bracket British thread 68 - 113 mm View larger

Shimano BB-UN300 bottom bracket British thread, 68 - 113 mm



A good quality and value Shimano 68/113 bottom bracket for traditional chainsets

Square taper JIS

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This Shimano square taper bottom bracket uses super-accurate bearings for smooth operation and improved durability

113mm for 68mm bottom bracket shell, 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

Shimano code: BB-UN300 previous code was UN-55

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Data sheet

Bottom Bracket Shell Size68mm