Double Aluminium Roller Upgrade M4WD-34/PK for Mini 4WD 12-13mm by 3Racing  [M4WD-34/PK]

Tamiya Mini 4WD Double Aluminum Rollers ( 12-13mm )(Pink) - 3RACING M4WD-34/PK
Price:
USD$7.50
Brand:
3Racing
Model:
M4WD-34/PK
Condition:
Brand New
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M4WD-34/PK technical double roller description

The M4WD-34/PK is a precision-machined double-roller assembly in anodized pink aluminium designed for Mini 4WD platforms that accept 12-13mm bores. The paired roller configuration increases lateral stability at corner entry while matching the finish and geometry of aluminium upgrade components.

Compatibility covers a range of Tamiya Mini 4WD stay layouts using 12mm to 13mm roller bores; verify stay hole spacing, spacer dimensions and fastener types prior to installation. The rollers accept sealed bearings or open bushings depending on axle and shaft choices. This is an aftermarket accessory component rather than an OEM assembly.

Fitment guidance: check shaft diameter tolerance, spacer thickness and axial clearance to prevent contact with bodywork. Use appropriate countersunk screws or compact locknuts to secure the rollers, and inspect aluminium-to-steel interfaces for fretting when using steel spacers or hardened shafts. Maintain anodized surfaces with gentle cleaning to avoid abrasion.

For competitive builders the pink anodize provides a coordinated appearance with aluminium components while offering a durable spare option. Confirm bearing and shaft compatibility during parts selection to streamline fitting and setup.

What stay geometry is required for M4WD-34/PK?

Any stay that supports 12-13mm roller bores and standard mounting posts will accept this set. Cross-check hole spacing and mounting screw types before purchase.

Which bearing types give best race performance?

Small sealed bearings reduce rolling resistance on metal shafts and are the preferred choice for race setups, provided shaft diameter matches bearing ID.

How to avoid axial binding after install?

Ensure spacers maintain correct separation from the stay and use appropriate screw length so the roller inner face cannot contact the mounting post. Re-check axial play after tightening.

Are there any anodize compatibility concerns with steel parts?

Aluminium and steel contact can cause fretting; inspect mating surfaces and consider thin insulating washers or nylon spacers where appropriate to reduce wear.

Does material change require setup retune?

Material swaps may alter mass distribution slightly. Evaluate bearing choice and roller placement in your setup rather than expecting large handling shifts from aluminium alone.