Founded in 1982 by engine component manufacturing professionals, SI Valves has grown to become a valued resource for engine builders around the world. The company specializes in the unusual, and can provide premium grade valve train components for a wide variety of applications.

In 2009 SI acquired Valve Train Manufacturing (VTM) and the ability to make key components like valve guides, seats and keepers in its California facility. It’s important to note that VTM components are utilized by several leading aftermarket cylinder head manufacturers.

The company focus is on the individual engine builder and providing quality products at very competitive prices in a timely manner. In this day and age where corporate conglomerates are taking over many established performance industry manufacturers and focusing on short-term profits, SI Valves —now in its second generation of leadership— is in business for the long haul. We strive to be you “go to” valve train supplier.