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Shimano BB-UN55 bottom bracket British thread 68 - 110 mm View larger

Shimano BB-UN300 bottom bracket British thread 68 - 115 mm

BBUN55B15

Shimano

A good quality and value Shimano 68/115 bottom bracket for traditional chainsets (note picture shows 113)

Square taper JIS

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Special order item - please e-mail / call for availability

£29.99

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

115mm 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

(this replaced the old BB-UN55 bottom bracket)

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Data sheet

DisciplineMulti-type
Bottom Bracket Shell Size68mm