Mini 4WD M6.4 x 1.7 Bearing Spacer M4WD-03/RE by 3Racing  [M4WD-03/RE]

M4WD-03/RE red M6.4 x 1.7 spacer for precise bearing spacing

The red M6.4 x 1.7 ball bearing spacer is provided as a simple spacer component for Mini 4WD builds where repeatable axial spacing matters. It is intended to set bearing clearance and location inside wheel hubs, rollers, and gear stacks rather than act as a bearing or axle.

Builders should check the M6.4 x 1.7 dimensions against the bearings and hub bores on their chassis before fitting. This spacer is compatible with Mini 4WD parts that accept M6.4 separators and does not modify drivetrain layout or motor fitment on its own.

Fitment advice: support bearings during assembly to avoid side load and keep mating surfaces free of debris. The colour is cosmetic only and does not signal different strength or tolerance. Use accurate measuring tools when replacing spacers in tight assemblies.