Valve Spring Tester Springs

When accuracy is the difference between winning and losing, when choosing Valve Spring Tester Springs there is one test spring kit that's a cut above the rest … the RIMAC calibrated 3-in-1 test spring kit. These kits includes three test springs: a lightweight spring, a medium weight, and a combined heavyweight spring, giving you an approximate test range from 10 to 640 lbs. They are super accurate and individually tested on an Instron SF1240 testing machine and a data sheet included.