Compact 19mm Ringless Ball Race Roller M4WD-40/GO for Mini 4WD by 3Racing  [M4WD-40/GO]

19mm ringless gold aluminium roller M4WD-40/GO

This 19mm aluminium ball race roller M4WD-40/GO features a ringless profile and a lightweight construction finished in gold anodize, targeted at Mini 4WD hobbyists and club racers. The component forgoes an outer ring to reduce rotating mass while relying on internal balls for the rolling action and lateral guidance.

It is compatible with typical Mini 4WD roller locations on Super-II, MA and AR style chassis, but final fitment depends on your post diameter and spacer stack. The ringless contour can change how the roller meets guard plates and tape on corners, so perform a dry fit to confirm clearance before racing.

For fitting, pay attention to axle spacing, shim choice and matching roller width to your stays. The lighter roller will respond differently in inertia compared with ringed types, so use it where reduced rotational weight is desirable while maintaining necessary guidance.

Finish and material are consistent with aftermarket aluminium rollers, with an anodized gold coating for protection and aesthetics. Always verify that your washers, bearings and fasteners are compatible before locking the part into place.