The Kyosho IS106-7514 Big Shock Spring is a direct-fit upgrade for the INFERNO MP9 that adds a medium gray 7.5-1.4 spring rate. This spring helps deliver steadier damping and improved stability while retaining the original mounting and travel characteristics.
At 84mm long, this shock spring suits drivers wanting crisper handling across track conditions. Use it when dialing in balance for corner entry and exit, or when adjusting compliance for different surfaces.
Built to work well on both loose dirt and prepared circuits, the Kyosho Big Shock Spring offers predictable feedback and improved traction. It is a cost effective way to refine suspension behavior without swapping major components.
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