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The Shimano HB-RM66 right hand lock nut is a genuine replacement part designed specifically for Shimano HB-RM66 front hubs. This small but essential component helps secure the hub assembly, keeping your bearings correctly preloaded and your wheel running smoothly and reliably. Using the correct original lock nut ensures proper fit, long-term durability, and consistent performance, especially if you are servicing a worn hub or replacing damaged hardware after many miles of riding.
Ideal for home mechanics and professional workshops alike, this Shimano lock nut is engineered to the same standards as the rest of the HB-RM66 hub system. It is a smart choice when overhauling your front wheel, eliminating play in the bearings, or restoring a wheel that has seen heavy use in all-weather conditions. By choosing an original Shimano spare part, you help maintain the integrity of your wheel, extend the life of your hub, and ensure safe, predictable handling on every ride.
