Proform Digital Valve Spring Tester - 1000lb. Round Chromoly Tubing the SB004 is cold formed

the SB004 is cold formed to better resist torsional fatigue and retain its "memory" far longer than the hot-formed bars used by many competitors

688 lb/in Spring Rate

3/8 in NPT Male Inlet

The advanced Digital Stepper Motor Drive keeps needle movement smooth and precise

best with upgraded exhaust and 2000+ stall

Proform Digital Valve Spring Tester - 1000lb. Round Chromoly Tubing the SB004 is cold formedProform Digital Valve Spring Tester 1000lb. 66776 0 1000 lbs in. Range Bench Mount Valve Spring Tester PROFORM invites racers to experience the strength, innovation, and power behind the PROFORM brand. PROFORM Parts (Specialty Auto Parts U. S. A., Inc.) is a leader in the High Performance Automotive Aftermarket by engineering and manufacturing creative products from intelligent concepts. Our goal is to provide the performance enthusiast with