3Racing M4WD-40/LB 19mm ringless aluminum ball race roller for Mini 4WD racing chassis  [M4WD-40/LB]

3Racing M4WD-40/LB 19mm ringless aluminum race roller (light blue)

This 3Racing M4WD-40/LB item is a 19mm aluminum ball race roller offered in light blue. The ringless form factor is the primary design feature; the roller is presented as a replacement or spare part for Mini 4WD racers who prefer compact, low-profile rolling components on performance-oriented chassis.

For experienced hobbyists the useful information is practical: the part is intended as a roller component and should be assessed for axle spacing, post diameter, and mounting orientation before installation. The light blue finish identifies the part visually but does not imply a performance rating.

When planning fitment, check roller clearance and any post guards used on MA, MS, AR, FM-A, VS, or Super-II style chassis. The ringless configuration changes how outer contact surfaces engage guide rails and bumpers; choose mounting positions and spacer combinations that match your existing roller geometry.

Packaging and labelling follow the seller designation; verify part colour and quantity before committing to a swap in a race setup or a display build.