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

M4WD-03/PK pink M6.4 x 1.7 bearing spacer technical overview

This single-dimension spacer provides a controlled axial separation for M6.4 x 1.7 ball bearings used in Mini 4WD wheel and axle assemblies. The pink surface finish is a visual identifier; specific material composition and tolerance data are not supplied by the vendor.

Application guidance for tuners: use these spacers where fixed inner-race spacing is required to achieve predictable preload and minimise lateral runout. Prior to installation, verify bore concentricity and outer diameter clearance against the bearing inner race and hub bores. For precision stack heights, assemble components on a flat bench and measure axial play and runout before system integration.

Compatibility advisory: intended for conventional Mini 4WD bearing arrangements. Do not assume interchangeability with custom axles, oversize hubs or alternate race profiles without dimensional verification. This component is an aftermarket accessory and does not change chassis classification or permitted modifications.