For Mini 4WD racers looking to tighten lap times and control, the Tamiya 94986 JR Mass Damper Set provides a straightforward stability upgrade. The black metal-plated bowl weights are designed to soak up landing shocks and reduce unwanted bounce, helping cars stay planted through jumps and rough sections.
The kit contains four bowl-style mass dampers plus the supplied 30mm stainless steel screws, spacers, washers, and nuts for a complete fitment. These parts work with many Mini 4WD chassis layouts, letting enthusiasts fine-tune balance and weight distribution for better traction and smoother runs.
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