Single Inner Valve Springs from COMP Cams allow you to build the perfect spring assembly for your application. The valve spring creation process is far more involved than most people realize. Selecting the right metal stock and creating the best design is not done by chance. COMP Cams has developed a process that creates the highest quality valve spring available. The result is a product that meets and exceeds the expectations of today’s engine builders and racers. PartNumber : cca975-16 Description : Single Inner Valve Springs; 16 Pieces Title : 975-16 Valve Springs, 0.960" Inner, Red California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Coil Bind Height : 0.928 Damper : No Number of Springs : 1 Outer Spring Inside Diameter : 0.697 Outer Spring Outside Diameter : 0.953 Seat Height : 1.5 Seat Pressure : 58 Spring Rate : 130 Inside Diameter(in) : 0.697 Position : Inner Outside Diameter(in) : 0.953 Camshaft Type : Mechanical Coil Bind Height(in) : 0.95 Open Height(in) : 1 Installed Pressure(lbs) : 55 Spring Rate(lbs/in) : 144 Spring Type : Single Installed Height(in) : 1.5 Open Pressure(lbs) : 127 Engine Components::Valve Springs, Retainers