The Pro Dual Valve Springs are a "must-have" upgrade when running bigger lift cams and higher RPM's. With 100lbs of seat pressure 1.400" install height and open pressure of 225lbs (at .450" lift) they will work perfectly with any high boost application (20+ lbs of boost). These springs are rated up to 10,000 RPM and will accommodate cam lifts up to .515"!
NOTE: Sold as a set of (24). Make sure your valvetrain match correctly, failure to do so could result in engine damage.
Contact our Tech Support Line for further information at 928-575-2174.