This set is intended for Kyosho Mini-Z AWD MR-03 shock assemblies and carries the model reference MZA0345SP. It includes three pairs of springs in 0.3mm, 0.4mm and 0.5mm wire diameters, each with a 5.2mm free length so you can evaluate different spring rates without changing ride height significantly.
Fit the springs to MR-03 shocks by checking seating and preload; the thinner options provide more compliance while the thicker wire increases spring stiffness. Always match left and right components to prevent asymmetry in handling.
For systematic tuning swap one pair at a time, keep notes on handling and lap performance, and try front to rear combinations to find the best balance for your driving style. These springs are designed for model suspension tuning use only.
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