Mini 4WD Lightweight 17mm ringless race roller M4WD-31/RE by 3Racing  [M4WD-31/RE]

17mm ringless race roller M4WD-31/RE for competitive Mini 4WD

This 17mm ringless aluminium ball race roller is supplied as a spare for Mini 4WD models. Designed for performance 4WD racing chassis, it acts as a direct spare or alternative to stock rollers. The ringless inner profile cuts down on internal contact compared with ringed rollers, and tuners will notice differences in rolling response and fit on highly tuned setups.

Compatibility notes: compatible with the common Mini 4WD roller mounts and axles used on racing chassis. It does not represent a full upgrade kit; installers should verify axle diameter and spacer thickness before fitting. It is not recommended for Wild Mini 4WD or Scale Mini 4WD applications, and the tuning advice here applies to chassis types such as MA, MS, AR, FM-A, VS and Super-II where relevant.

Finish and handling: the roller is anodised red and machined from aluminium. Avoid overtightening screws and check lateral movement after initial runs. Regular cleaning and inspection for burrs will help maintain smooth rolling and reduce wear to mounting points.