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Discussion Starter · #1 ·
Got a Athena 480ccm Big Bore Kit on my 2014 YFZ450R
My Piston ist worn and i want to replace it.
It seems, that Athena does not offer replacement Pistons, right?

I also could not find any other brands with a matching Piston.

What are you big bore guys doin when Piston is done?

Any hints where to get a Piston? Part No?

Thank you
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