1/32 Mini 4WD 9mm Ringless Aluminium Roller M4WD-29/GO by 3Racing  [M4WD-29/GO]

Gold 9mm aluminium ringless roller M4WD-29/GO

This 9mm aluminium ball ringless race roller is offered as a replacement part for 1/32 Mini 4WD cars. The roller features an aluminium body built around a ringless bearing arrangement; the text below focuses on compatibility, material choice, and upkeep rather than claiming speed gains.

Builders will recognise this as a compact roller for standard Mini 4WD assemblies where space is limited. The ringless bearing configuration alters how the bearing is retained, so take care with axle locking and lateral gap when fitting. Aluminium provides a good compromise between stiffness and reduced mass compared with heavier materials.

Compatibility notes: this style of 9mm roller fits many tuner-style platforms including MA, MS, AR, FM-A, Super-II and VS families when 9mm mounting points are available. It is not a universal fit for Wild Mini or Scale Mini 4WD types without verifying the chassis design.

Maintenance: prevent grit ingress to the ringless bearing and use a light oil sparingly if smoothness drops. Recheck axle seating and any spacers when swapping in this roller to maintain correct chassis geometry.