Pro Circuit Kawasaki Power Valve

The stock power valve on a KX 85/100 only lowers the exhaust port to a minimum resulting in less bottom end power. The Pro Circuit Power Valve lowers the exhaust port height to where it should be, resulting in huge gains in the bottom end while maintaining peak horsepower. Pro Circuit’s Billet Stainless Power Valve combined with the Pro Circuit Governor Spring provides a major improvement over the stock set up.