The Kyosho IFW457-7514 Big Shock Spring is a handy replacement for those tuning INFERNO MP9 suspension. Its 78mm length and 7.5-1.4 rate in grey deliver measured support to help the car stay composed during aggressive laps.
This spring is aimed at drivers who want to control roll and weight transfer without swapping major components. It installs on standard MP9 shocks and can be used alongside small changes to preload and oil to find the sweet spot for handling.
Across rough patches and smoother race lines, the Kyosho Big Shock Spring helps the chassis settle after impacts and keeps front-end feel consistent. It is a reliable choice for those wanting repeatable, raceable suspension behaviour.
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