This 9mm aluminium ball ringless race roller is offered as a spare component for 1/32 Mini 4WD applications. Built with a ringless bearing inside an aluminium sleeve, the notes below cover fitment, material rationale, and servicing rather than performance promises.
Model builders will use this roller in standard Mini 4WD assemblies where compact 9mm rollers are required. The ringless bearing layout affects how the bearing is retained and seated, so installers must watch axle retention and lateral clearance during assembly. The aluminium outer gives a useful combination of rigidity and lightness common to aftermarket mini rollers.
Compatibility notes: these 9mm rollers are suitable for many tuning chassis platforms such as MA, MS, AR, FM-A, Super-II and VS series when the chassis accepts 9mm positions. They may not suit Wild Mini 4WD or Scale Mini variants without checking the chassis design.
Maintenance: avoid grit in the ringless bearing and apply a small amount of light oil if spinning roughens. Inspect axle fit and spacer thickness whenever replacing factory rollers to keep chassis alignment intact.
Copyright © 2008-2026 rcjaz.co.uk All rights reserved