1/32 Mini 4WD Ringless 13mm Aluminium Ball Roller M4WD-30/PK Pink by 3Racing  [M4WD-30/PK]

Pink 13mm ringless aluminium ball race roller

This 13mm aluminium ball race roller is supplied as a replacement option for seasoned Mini 4WD enthusiasts. The ringless bearing arrangement removes the outer retaining lip, changing the roller edge profile and modifying how the roller contacts guide walls and stabiliser arrangements on many Mini 4WD chassis. It is sold as a replacement roller, not a chassis kit.

Compatibility notes: the roller is intended to work with standard Mini 4WD roller mounts and the typical axle assemblies used with Tamiya-style performance chassis. When used on MA, MS, AR, FM-A and similar performance frames, verify side clearance and spacer configuration to preserve intended contact characteristics. This component is not designed for non-performance lines such as Wild Mini 4WD or Scale Mini 4WD.

Fit and service: aluminium construction provides a hard-wearing contact face while the ball-bearing core requires occasional cleaning and light lubricant suitable for miniature bearings. Inspect for play after fitting and replace the roller if bearing tolerance increases. Keep its small mass in mind when balancing roll inertia in tuned builds.

Installation considerations: install using compatible roller shafts and spacers and confirm axle length and clip engagement before finishing assembly. For consistent behaviour, check alignment under static load and ensure free rotation without rubbing the chassis or stabilisers.