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Ben_Atkinson

Athena big bore kit in 2006/2007 YZ450?

2 posts in this topic

Has anyone put an Athena big bore kit (478cc) in their 2006/2007 YZ450? If so, how does it work? Do you have to change the jetting with this kit?

Are there any other options for a bigger motor besides the Athena kit?

Thanks.

--Ben

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