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03 450 Piston


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i just changed mine on the 02 a few weeks ago. had about a 100 -120 hrs on it. everything was still within spec. i should have waited longer. it was a waste of money, but now i have piece of mind on how it is holding up. keep a check on the valves and dont worry so much about the piston and rings. make sure you change the oil and keep the air filter clean.

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compression tests might not be a great diagnosis unless you disarm the compression release.. just a thought.. they say that if you watch oil consumption you should be able to tell when your due for a rebuild... mine doesn't use any over several rides so I might pull it apart and check it out. I bet it will still be in specs but I probably will jump the gun and freshen it up for next season even still.

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