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 : cca973-1 Description : Single Inner Valve Springs; Single Piece Title : 973-1 Valve Spring, 0.970" Inner California Proposition 65 : WARNING: Cancer and Reproductive Harm P65Warnings.ca.gov Coil Bind Height : 1.04 Damper : No Number of Springs : 1 Outer Spring Inside Diameter : 0.7 Outer Spring Outside Diameter : 0.97 Seat Height : 1.75 Seat Pressure : 46 Spring Rate : 134 Open Height(in) : 1.15 Position : Inner Spring Rate(lbs/in) : 133 Camshaft Type : Hydraulic Inside Diameter(in) : 0.7 Coil Bind Height(in) : 1.07 Open Pressure(lbs) : 126 Installed Height(in) : 1.75 Installed Pressure(lbs) : 46 Outside Diameter(in) : 0.97 Spring Type : Single Engine Components::Valve Springs, Retainers