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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
First launched exactly two decades ago
30-40 psi (700c)
275g (42cm)
Volume: Approximately
CeramicSpeed Bearing 61903 Standard Brown/White First launched exactly two decadesEngineered for unparalleled low friction and exceptional durability, optimizing power transfer and efficiency in high performance cycling components. The CeramicSpeed Bearing 61903 Standard is a precision engineered ceramic bearing designed to provide a significant upgrade in performance and longevity for your bicycle's rotating parts. Featuring high quality CeramicSpeed balls and robust steel races, this bearing dramatically reduces friction compared
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