Tamiya Mini 4WD Cuboid Mass Weight 9g - M4WD-39/LB by 3Racing  [M4WD-39/LB]

3Racing M4WD-39/LB compact cuboid for Mini 4WD

This compact rectangular 9g cuboid is a simple mass element finished in light blue and supplied by 3Racing. It is intended as a spare weight for Tamiya Mini 4WD cars, giving hobbyists a predictable way to adjust static mass distribution on compatible performance chassis. The item adds plain mass rather than active damping, so it is used where additional ballast is required without complex mechanics.

Mounting and fit depend on the chassis layout and any aftermarket brackets you use. Experienced builders place this low-profile block where it can be secured without impeding rollers, gear trains, or body clearance. It works well with common Mini 4WD accessory holes and universal mass-damper fittings that accept a small rectangular block.

Finish and material matter for model display and consistency. The light blue coating suits visible mounting areas and many custom liveries, but always check clearances and fastener security before running on track. Treat this part as a trimming weight for balance rather than a competitive damping upgrade in regulated series.