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Who has used Pro-Circuit valves?

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Just wondering if anyone has used Pro-Circuit valves and springs. If so, how is their durability?

I just talked with Pro-Circuit (again), they said their Titatium valves are made of a stronger Titanium and that their coating is tougher than stock.

The guy I talked to said the valves should last 2-4 times longer than stock.

At $169 per valve + $139 for springs I don't want to be a guinea pig. My last valve job lasted 7 hours. (by the way my intake tract is clean and I don't over-rev)

Has anybody used them?


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