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Review on πŸ”§ ProForm 66835: Maximize Engine Performance with Mini Valve Spring Tester by Sean Sheppard

Revainrating 5 out of 5

It works quite well

I'm glad I invested in this little tool, I've used it against several different cylinder head springs and it's interesting, the closed valve spring rate as well as the open/full one Raise the valve to see force of old and new springs. I would buy this again

Pros
  • Automotive
Cons
  • Not as thick as other picks