The Tamiya 94985 JR Mass Damper Set brings four black metal-plated cylindrical dampers to your Mini 4WD, helping to cut landing bounce and keep the car planted through technical sections. These compact weights add controlled mass where it matters for smoother, more consistent runs.
Each kit ships with 30mm stainless steel screws, spacers, washers, and nuts for a secure fit on most Mini 4WD chassis. Properly fitted mass dampers reduce vertical motion and can make corner entry and exits more predictable under race conditions.
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