Kyosho W0142GM Aluminum Collar 3x6x2mm (6)

Kyosho W0142GM is a six-pack of genuine aluminum collars measuring 3mm inner diameter, 6mm outer diameter, and 2mm thick. These anodized aluminum spacers are precision-machined to exact thickness, which makes them far more consistent than stacking generic washers when you need to shim a component accurately. On a race chassis they earn their keep at dozens of spots: spacing ball studs to tune link geometry, shimming suspension mounts, setting bearing preload, and dressing up screw heads anywhere a 3mm fastener passes through.

Kyosho classifies these as a general-purpose option part, so they work across the full Kyosho lineup and any other brand using metric 3mm hardware, with the Ultima RB6 and SC6 among the models they are commonly listed with. Aluminum keeps the added weight negligible while resisting crush better than plastic spacers, so your settings stay put. Package includes six collars in the 3x6x2mm size, a handy addition to any parts drawer.