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

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

The 19mm aluminium ball race roller M4WD-40/GO combines a ringless outer profile with a lightweight aluminium body and an anodized gold finish, aimed at Mini 4WD enthusiasts focused on tuning and presentation. The internal ball arrangement supplies the rolling interface while omitting an outer ring reduces rotating mass.

This roller is intended for the common roller positions used on Super-II, MA, AR and similar 4WD chassis, though correct fit depends on post diameter and the spacer scheme on your stay. The ringless outline can alter interaction with guard plates and low-friction tape so clearance checks are recommended before track use.

When installing, consider axle spacing, shim selection and the roller width needed for the chosen stay. The lighter assembly changes inertial characteristics compared with thicker or ringed rollers, so use it where reduced rotational weight is preferred without losing fundamental guidance.

The piece is anodized for corrosion resistance and visual appeal, following standard aftermarket aluminium roller practice. As with any small replacement part, confirm compatibility with your washers, bearings and mounting screws prior to permanent fitting.