Mini 4WD Twin Aluminium Roller Upgrade M4WD-36/LB by 3Racing  [M4WD-36/LB]

Tamiya Mini 4WD Double Aluminum Rollers ( 18-19mm )(Light Blue) - 3RACING M4WD-36/LB
Price:
USD$7.50
Brand:
3Racing
Model:
M4WD-36/LB
Condition:
Brand New
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Technical overview of the M4WD-36/LB twin roller unit

The M4WD-36/LB is a twin roller assembly engineered for Mini 4WD chassis that accept 18-19mm rollers. Fabricated from aluminium and finished with a light blue anodize, the unit functions as a replacement or tuning component where compact, matched-diameter rollers are required.

For competitive tuning, the integrated double-roller mount provides two adjacent rolling faces on a single carrier, modifying lateral contact and rebound compared with independently mounted single rollers. This can influence guide rail engagement and wall rebound characteristics during cornering and recovery phases.

Installation characteristics vary by chassis and mounting arrangements. Confirm available shaft length, spacer stack height and axial retention method prior to fitting on Super-II, MA, MS, AR, FM-A, VS or other performance-oriented platforms. The specification notes 18-19mm sizing and a light blue anodized finish; the product does not include motor, gearing or other drivetrain items.

What checks ensure correct fitment on a given chassis?

Measure shaft projection, spacer thickness and lateral clearance. Confirm the roller does not contact the body or chassis at full suspension travel and that axial retention hardware prevents end float.

Should bearings be used with this aluminium roller?

If low friction is required, install appropriate bearings or bushings sized for the roller shaft. Verify internal diameter tolerances and select bearing types compatible with your mounting hardware.

How does anodize affect maintenance and wear?

Anodize improves surface hardness and corrosion resistance but will show wear where metal contacts abrasive track elements. Regular inspection and cleaning will extend service life.

What tuning advice applies when switching to twin rollers?

Expect altered rail contact and rebound; adjust spacer stacks, mounting height and, if available, damper settings to restore desired cornering balance. Run incremental tests and log results to find optimal geometry.