I still stand by my comment.
As it pertains to MX bikes. I raced and rec road them for years. You rebuild them often because the piston to wall clearance opens up and you risk cracking a piston. If your doing it right you rebuild long before power drops off.
I don't believe it's actually certified. If you are talking about thr stuff in the blue bottle it's pretty good. The spectro in the black and gold bottle isn't that great.
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