Mini 4WD Low-Profile 13mm Aluminium Ringless Roller M4WD-30/PK Pink by 3Racing  [M4WD-30/PK]

Pink low-profile 13mm ringless aluminium roller

This 13mm aluminium ball race roller is offered as a spare for experienced Mini 4WD hobbyists. The ringless layout removes the retaining ring around the edge, reducing raised contact points and altering how the roller interacts with chassis guide walls and stabiliser setups. The item functions as a direct replacement roller rather than a chassis kit.

Compatibility notes: intended for standard Mini 4WD roller mounts and conventional axle assemblies used on Tamiya-style performance chassis. When using on MA, MS, AR, FM-A and other performance-focused frames, confirm side clearance and spacer arrangement to preserve the expected contact and line. This product is not a tuning suggestion for non-performance series such as Wild Mini 4WD or Scale Mini 4WD.

Fit and service: aluminium construction provides a wear-resistant contact face; the ball-bearing core needs routine cleaning and light lubrication suitable for miniature bearings. Check for axial play after fitting and replace the roller if bearing tolerance increases. Evaluate its influence on roll inertia and overall balance in lightweight builds.

Installation considerations: fit to compatible roller shafts and spacers, and verify axle length and clip engagement before final tightening. For consistent results, check alignment under a static load and ensure there is no binding against the chassis or stabilisers.