3Racing Mini 4WD Mass Damper 6mm Ball M4WD-04/LB  [M4WD-04/LB]

6mm mass damper ball M4WD-04/LB - light-blue identifier

This 6mm damper ball is intended for use as the movable mass inside Mini 4WD mass-damper cartridges and mounts. It serves as a spare damping element for hobbyists and collectors who replace or refresh small moving parts in standard Mini 4WD assemblies.

The light-blue coloration makes parts sorting easier when you are working on multiple damper cartridges or building a set of tuned masses. Treat the ball as a precision damping element and inspect the surface for flat spots or deformation before reusing in a cartridge.

Fitment notes: this 6mm ball is made to sit in conventional mass-damper housings found on 4WD Mini chassis such as MA, MS, AR and Super-II where a 6mm movable mass is used. Always check the internal diameter and retainers of your damper housing to confirm correct clearance and free movement.

Care and storage: keep spare damper balls clean and stored in a dry container to avoid dust, oils or solvents that could hinder rolling. Replace balls when wear affects smooth motion or when material discoloration suggests aging.