The Kyosho IFW457-814 Big Shock Spring is a direct-fit upgrade made for the INFERNO MP9. This light blue 8-1.4 coil spring with a 78mm length adds an extra option for suspension setup, helping racers and enthusiasts dial in handling with greater accuracy.
When you want predictable changes in spring rate, this Kyosho big shock spring delivers consistent response for cornering and mid-speed stability. It is matched to the INFERNO MP9 shock geometry so you can tune for different track surfaces or mixed terrain with confidence.
Installation is straightforward and requires basic tools plus secure support for the car. Replace one corner at a time, adjust preload as needed, and run short tests to confirm the new setup before pushing hard.
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