The M4WD-07/BK is a compact, bowl-shaped 3.5 gram mass intended as an aftermarket spare for Mini 4WD damper assemblies. Its low profile and black finish make it suitable for confined damper bays where precise weight placement matters for minor setup tuning. This description emphasises correct fit and practical setup use rather than unfounded performance claims.
In practice the component is used to add a small, repeatable mass to damper housings or approved accessory mounts on compatible Tamiya Mini 4WD chassis. Fitment is determined by damper housing geometry and the available fastening method on the target car. For tuning work, note the nominal 3.5 g value when planning weight distribution or when swapping multiple small masses to dial handling.
Workshop guidance: keep spares of M4WD-07/BK for quick replacement during race events or setup sessions, and confirm clearance and retention before running. This product is an aftermarket part by 3Racing and should be treated as a tuning accessory rather than an OEM replacement.