Elite Race Double Valve Springs from COMP Cams have a .700? to .800? maximum lift and outside diameter of 1.549?. The best in durability and load loss prevention, and designed for use with roller cams, they are widely used in Dirt Late Model and Asphalt applications, as well as serious bracket race engines. The metallurgists at COMP Cams scrutinize every piece of metal utilized in the creation of Elite Race Valve Springs to make sure they are of unsurpassable quality because fissures within the metal of standard spring wire, caused by molecular contaminants, are the weakest link in valve spring construction. These fissures appear to be immense under the Scanning Electron Microscope but in fact, are just microns wide. Diminishing the occurrence of these fissures in our valve spring steel is the COMP Cams standard when selecting materials.