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Stock valves

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Just to show how good stock valves are At the beginning of the season I put in a set of used but still in good shape intake valves that I got from a friend.Also because the valves had some carbon deposits on them I used a wire wheel to clean them up.I know in the process I took off the protective coating.But they lasted just about five months of hard motocross riding.Over the winter I will rebuild the engine using stock parts but I am finally going to get all the parts Croyed.I just put in new intakes with new springs and to my amazement the new springs were the same as the old no change in length.So either the stock springs are soft to begin with or they are not as bad as people claim.And I don't normally use used parts but I was in a bind and that is all I had.

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