COMP Cams engineered the #26124 valve springs to have increased spring rate, as well as higher seat load for much better dynamic stability than factory springs. Unique ovate spring wire was selected to better manage operation stresses, create additional dynamic control and help valve train reliability at elevated RPM and boost pressures. Springs are also available in single units (Part #26124-1) or as a kit with the valve Seals and shims (Part #26124-Kit).