Compact 9mm Ringless Race Roller for Mini 4WD M4WD-29/GO by 3Racing  [M4WD-29/GO]

M4WD-29/GO 9mm aluminium ringless roller in gold

Supplied as a spare for 1/32 Mini 4WD models, this 9mm aluminium ball ringless race roller uses a ringless bearing layout inside an aluminium body. The entry below concentrates on compatibility, chosen materials, and maintenance points rather than performance claims.

The roller is intended for standard Mini 4WD setups where a small 9mm roller is required. Ringless bearings change the method of retention, so pay attention to axle securement and lateral clearance during assembly. The aluminium construction balances rigidity with low mass for common aftermarket tuning parts.

Compatibility notes: this 9mm option fits many performance-oriented chassis such as MA, MS, AR, FM-A, Super-II and VS series when the chassis design allows 9mm rollers. It is not guaranteed for Wild Mini 4WD or Scale Mini 4WD variants without checking specific mounting details.

Maintenance: keep contaminants out of the ringless bearing and lubricate lightly with a low-viscosity oil if rotation becomes rough. Verify axle fit and spacer thickness when replacing original rollers to maintain alignment.