Mini 4WD Ringless 9mm Aluminium Ball Roller M4WD-29/RE by 3Racing  [M4WD-29/RE]

Tamiya Mini 4WD 9mm Aluminum Ball -Race Rollers ( Ringless )(Red) - 3RACING M4WD-29/RE
Price:
£3.71
Brand:
3Racing
Model:
M4WD-29/RE
Condition:
Brand New
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Ringless 9mm aluminium ball race rollers M4WD-29/RE in red

These 9mm ringless ball race rollers are machined from aluminium and intended as spare rollers for Mini 4WD models. The aluminium bodies and ball-style contact surface match common 9mm roller configurations, with a red anodized finish to identify the variant for display and spares.

For model tuners: the ringless layout reduces the effective contact diameter at the roller edge, helping where clearance to guide walls or the chassis is restricted. Check post alignment, spacer stacks and bushing fit before final tightening to maintain consistent contact behaviour.

Material and finish information is as supplied by the manufacturer: machined aluminium, red anodized surface and a ball-type running face. Fit with standard Mini 4WD hardware and confirm free rotation after mounting to avoid rubbing from adjacent components.

Will these work with my 9mm roller posts?

They are designed for 9mm setups, but you should check axle/post diameter and any spacers or flanges to ensure correct clearance and rotation.

Does ringless change the rolling behaviour much?

The ringless profile narrows the contact zone which can alter rolling feel slightly and reduce interference when space is tight.

Should I protect guide walls from wear?

Metal-on-plastic contact can cause wear; examine guide walls regularly and use thin tape or guards if needed to limit abrasion.

Any lubrication needed for these rollers?

These are typically fine without lubrication, though a small amount of light oil at the axle interface can help if you notice binding or noise.

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