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

19mm gold ringless aluminium race roller M4WD-40/GO

This 19mm aluminium ball race roller M4WD-40/GO is a ringless, lightweight option finished in anodized gold and aimed at Mini 4WD hobbyists and tuners. Its aluminium body houses an internal ball arrangement and omits an outer retaining ring to lower rotating mass while keeping lateral guidance on standard roller mounts.

The roller is suited to common Mini 4WD chassis roller positions including Super-II, MA and AR styles, but fit depends on post diameter and spacer layout for each stay. The ringless profile can change how the roller interacts with guard plates and low-friction tape during cornering, so verify clearance before competitive use.

Installation tips for experienced builders include checking axle spacing, selecting appropriate shims, and matching roller width to the front or rear stay. The reduced mass can alter inertial response compared with thicker or ringed rollers, so choose this part when you want lower rotational weight without losing basic guidance.

Materials and finish follow typical aftermarket aluminium roller practice with an anodized gold surface for corrosion resistance and appearance. As with small spares, confirm compatibility with your existing washers, bearings and mounting screws before final assembly.