This 9 gram cuboid mass element is supplied as an aftermarket accessory for experienced Mini 4WD builders focusing on fine mass distribution and damping tuning. The rectangular profile supports installation in constrained stay geometries where axial clearance is limited.
Installation guidance for tuners: treat this part as a dedicated weight rather than a structural kit item. Confirm mounting hole alignment, stay spacing, and any spacer requirements during a dry fit. Any modification to fastening stacks or location must be tested, as even minor changes to local mass and compliance can alter dynamic response.
Compatibility summary: intended for 4WD chassis that accept supplemental mass dampers to stabilise pitch and roll under dynamic loads. It is not a propulsion or gearing upgrade and should be integrated as part of an iterative setup process.