Super-Rad Dual Valve Springs with Damper (16) 1.625" OD 250LBS @ 2.020" Seat Pressure, 690LBS @ 1.245" Open Pressure, 1.180" Coil Bind

The Super-Rad Series succeeds where other valve springs fail. Test proven in the ISKY Research Lab under Spintron III parameters, that being 1024 racing miles of abuse followed by 26 continuous miles of absolutely flat out (9000 rpm) sustained full throttle operation this taking Super-Rads endurance to the next level.