09 wr450f air mod

Sup people, so I have a wr450 with a big bore kit 480 on it.I was thinking about doing the air box mod but I also here that you have to rejet it...you think if I did the mod it would Jack it up....o and it's a supermoto too so it doest see that much dirt....thanks

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Edited by vindog

Yes a rejet would be necessary. Its not difficult to rejet.

How would I know what to jet it too

Read the FAQ section

Search for 'uncorking'

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