This kit, model 3RAC-N20/BL/V2, contains black 2mm aluminum lock nuts sized to fit Kyosho Mini-Z wheel hubs. They are made to match the 2mm thread used on Mini-Z MR-015, Mini-Z AWD, MR-01 and MR-02 (MM) variants where a compact lock nut is specified.
Fitment notes: these nuts secure wheel hubs and related fastenings while reducing the chance of loosening from vibration in small-scale racing. Fit with the correct 2mm driver, run the threads in by hand, check engagement and avoid overtightening to protect alloy threads.
Handling and tuning: switching to light aluminum lock nuts lowers unsprung mass at each wheel and provides a consistent finish for quick visual checks between sessions, helping streamline pit-side maintenance.
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