Tamiya Mini 4WD 13mm Ringless Aluminium Rollers, Slim Profile - M4WD-30/LB by 3Racing  [M4WD-30/LB]

13mm ringless aluminium ball rollers M4WD-30/LB in light blue for Mini 4WD

These 13mm ringless aluminium ball race rollers are specified with Tamiya-compatible fitment and intended as replacement or decorative rollers for Mini 4WD hobbyists. The assembly pairs an aluminium outer sleeve with an internal ball mechanism; the absence of an outside retaining ring reduces the contact edge diameter compared with ringed rollers, changing the way the roller meets guide surfaces.

Fitment targets Tamiya Mini 4WD mounting standards. The rollers are anodised in light blue and appeal to modders who want an alternative visual and a narrower edge profile while keeping the original chassis layout intact. The design excludes external retaining rings and requires the common roller mounting hardware used on most Mini 4WD chassis.

Installation advice for experienced builders: the ringless contact changes interaction with guards and may affect lap behaviour, so confirm clearances and mounting direction. These are aftermarket accessories and should not be used where competition rules limit nonstandard components.