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Review on ๐Ÿ”ง ProForm 66835: Maximize Engine Performance with Mini Valve Spring Tester by Robbie Guinn

Revainrating 5 out of 5

Works very 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 to see as well as valve opening/full stroke rate of old and new springs. I would buy this again

Pros
  • Package dimensions: 2.794H x 28.194D x 12.446W (centimeters)
Cons
  • No instructions