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

Tamiya Mini 4WD 9mm Aluminum Ball -Race Rollers ( Ringless )(Red) - 3RACING M4WD-29/RE
Price:
CAD$7.02
Brand:
3Racing
Model:
M4WD-29/RE
Condition:
Brand New
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9mm ringless aluminum ball rollers M4WD-29/RE in red

These 9mm aluminum ball race rollers use a ringless profile and machined body intended for Mini 4WD spare use. The machined aluminum construction and ball-type running surface suit common 9mm roller setups, while the red anodized finish identifies this colour variant for display and workshop spares.

For experienced builders: the ringless shape reduces the effective roller diameter at the contact patch, useful when chassis clearance is limited. Confirm roller post diameter and spacer stack before fitting to keep contact lines predictable against guide walls. Items are supplied as single rollers and fitment depends on your existing axle, bushing and spacer arrangement.

Manufacturer notes on materials are limited to the provided description: machined aluminum body, red anodized finish and a ball-type contact surface. Install using standard Mini 4WD fastening methods and check free rotation after assembly to avoid drag from nearby parts.

Will these fit my standard 9mm roller posts?

They are made for standard 9mm roller arrangements, but you should verify your post diameter, any flanges and spacer thickness to ensure correct clearance and free spinning.

What benefit does the ringless profile give?

A ringless profile narrows the contact surface, which can reduce interference with tight guide walls and lower overall roller diameter at the point of contact.

Will the aluminum mark plastic guide walls?

Metal on plastic can cause wear over time; inspect guide-wall surfaces and consider thin protective tape in high-contact areas to limit marking.

Do these need lubrication?

Lubrication is not normally required for passive aluminum rollers; if you detect noise or binding, a small amount of light oil at the axle interface can improve rotation.

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