Precision shaft stopper M4WD-38/PK for Mini 4WD axle retention by 3Racing  [M4WD-38/PK]

Tamiya Mini 4WD Aluminum Shaft Stopper -Pink - 3RACING M4WD-38/PK
Price:
USD$3.80
Brand:
3Racing
Model:
M4WD-38/PK
Condition:
Brand New
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Technical note on M4WD-38/PK pink aluminium shaft stopper

This machined aluminium shaft stopper is produced to provide compact axial retention for Mini 4WD straight axles. The anodized pink surface assists visual identification during assembly and servicing while the part is intended to seat against common hub profiles without changing chassis alignment.

Compatibility covers standard Mini 4WD axle diameters used by mainstream chassis platforms. Technically inclined builders should verify axle diameter, hub bore and roller clearance on MA, MS, AR, FM-A or Super-II derived assemblies prior to final installation. The description is focused on fitment and interface rather than asserting measurable performance improvements.

Mounting and packaging details depend on the hub manufacturer; treat this stopper as a precise spare or an aesthetic replacement component that complements matched aluminium parts in a set.

What measurements are critical for correct fit

Measure axle diameter and hub bore clearance. Ensure the stopper seats fully without forcing the axle or contacting adjacent rollers to maintain proper alignment.

Will the part affect axle alignment or geometry

When used as intended, the stopper secures axles without altering chassis geometry. Confirm seating depth and clearance to avoid any unintended lateral loads.

How durable is the anodized finish under workshop use

Anodizing increases surface hardness and resists light abrasion, but repeated heavy contact will wear the finish. Handle with appropriate care during installation.

Can this replace polymer stoppers in race builds

It can be used instead of polymer parts where dimensions and clearances match; verify that the metal component does not introduce binding or extra friction in the assembly.

Recommended inspection after fitting

After installation, run the axle assembly by hand to check for free rotation and confirm no contact with rollers or hub walls. Recheck clearance after a short test run.