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Reduced price! Shimano BB-ES51 bottom bracket 68 - 118 mm View larger

Shimano BB-RS500 bottom bracket cups - English thread cups



Shimano BBRS500B bottom bracket cups - British thread

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2 more on order - due soon!




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Outboard Bottom bracket bearing cups for use with 2-piece cap-free design road chainsets (Tiagra FC4600, FC4603 and Compact FC4650 for example)

Minimal bearing interface gives superbly smooth rolling

Required for installation of FC4600, FC4603 and FC4650 chainset

68mm BC 1.37

British thread

Replaces old part: BB4600B - BB-4600 Tiagra BB shell

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