The Tamiya 15180 - 13mm Guide Roller Ball Bearings provide a straightforward improvement for Mini 4WD models where guide roller smoothness matters. Fitted into guide roller positions, they lower resistance and promote smoother rotation through bending sections of the track.
Each pack includes two bearings, sized 13mm in diameter with a thin 3mm face, suitable for many standard guide roller assemblies. Their main benefit is reducing irregular friction so your setup maintains more consistent handling lap after lap.
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