Xceldyne Intake Valve Springs - PSIMX2004

Purpose-built racing valve springs from the only dedicated racing spring manufacturer in the country
Made from the highest quality Kobe spring wire
Utilizes all of the same features and processes that we design into our entire racing spring line
Designed for use with most cam grinds
Single spring, low-drag design done right the first time.None of the crutched two-spring designs out there add to your valvetrain mass which in turn costs you horsepower