COMP Cams Calibration Test Spring for #5313 20600Z inner bushing or 1/2" rod

inner bushing or 1/2" rod end to chassis as well as many other uses

Dark Mirror

Gauge kit includes Type-K Thermocouple

and two hex nuts

COMP Cams Calibration Test Spring for #5313 20600Z inner bushing or 1/2" rodCalibrate your miniature valve spring tester (5314) with this calibrated test spring. The COMP Cams philosophy has never changed: make the highest performing products possible and lead the industry in technological development. One thing COMP Cams has never forgotten: Performance is defined by what happens out on the race track. Because no matter what happens on a dyno or in a computer model, if that theoretical performance doesn't translate into real