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Shimano GRX 400 groupset
Pro class roller
Durable design and stud bag feet
efficiency means reduced: Wind resistance
Guide RSC (B1)
CeramicSpeed Bearing 61901 Coated Black/Beige Shimano GRX 400 groupsetEngineered for unparalleled low friction and ultimate durability, optimizing power transfer and efficiency with enhanced protection in high performance cycling components. The CeramicSpeed Bearing 61901 Coated is a premium precision ceramic bearing, meticulously designed to provide the absolute pinnacle of performance and longevity for your bicycle's rotating parts. Featuring high quality CeramicSpeed balls and robust steel races, this bearing
