Supertech Dual Valve Spring KitAll Supertech valve springs are manufactured using premium Superclean Chrome Silicon Vanadium Steel alloy, engineered for high RPM durability and long lasting performance. This premium alloy provides excellent structural memory, minimizing fatigue and helping your valvetrain maintain peak operation under stress. Every Supertech valve spring is computer designed to keep wire stress levels within the fatigue limits and control harmonics at high RPM. The
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