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Product Information
Shimano Tiagra Hollowtech 2 Road Bike Bottom Bracket Cup Kit Italian Thread
Outboard Bottom bracket bearing cups for use with Tiagra FC4500, FC4503 and Compact FC4550 2-piece cap-free design chain sets
Minimal bearing interface gives superbly smooth rolling
Required for installation of FC4500, FC4503and FC4550 chain set
Italian thread Bottom Bracket cups
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