3Racing M4WD-03/BK 1/32 Mini 4WD M6.4 x 1.7 ball bearing spacer (black) - spacer for Mini 4WD drivetrain alignment  [M4WD-03/BK]

3Racing M4WD-03/BK black M6.4 x 1.7 ball bearing spacer for Mini 4WD

This M4WD-03/BK spacer is a replacement part intended for Mini 4WD assemblies where M6.4 x 1.7 bearing spacing is specified. The component is presented as a straightforward spacer that sits between bearings or between a bearing and adjacent part to preserve axial position and alignment within common Mini 4WD drivetrain layouts.

Experienced builders will note that a dedicated spacer helps maintain consistent bearing seating and can reduce sideplay introduced by uneven stack heights. The black finish keeps visual continuity with darker chassis and roller configurations while remaining a serviceable spare for routine maintenance or restoration of older models.

Compatibility considerations: use this spacer where M6.4 x 1.7 bearing geometry is already part of the axle or roller assembly. It is a part-level item for replacement and upkeep; it is not a tuning upgrade and should be used according to the bearing and axle specifications of the host Mini 4WD.