For model racers and weekend tuners, the XRAY 378095 Progressive Shock Spring brings an adjustable feel that helps control weight transfer and improve overall traction. It is a practical part for tightening handling without wholesale setup changes.
The progressive characteristics from C=1.4 to 1.9 mean the spring reacts softly at small compressions and progressively firms up under heavier loads. This quality supports consistent grip across bumpy or changing surfaces.
This spring is useful when you want finer control over balance and steering. Use it when experimenting with shock oil, droop, or anti-roll adjustments to achieve a more consistent lap time.
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