Exhaust Valve Springs

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 Set of 2.Must use Spring Seats Mfr# XSSM42001