what size jet

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Mar 29, 2004 | 08:28 PM

thurmonator

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Trailblazer

Joined: Mar 2004

Posts: 92

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what size jet

i got a 2003 400ex. i put a slip on FMF megamax. i was thinkin i should put in a 152 jet. im not to sure what is best tho?

Mar 29, 2004 | 08:41 PM

shadetree101

Trailblazer

Joined: Mar 2004

Posts: 27

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what size jet

do a search on jetting. also it all matters on what sea level you live at.

Mar 29, 2004 | 08:43 PM

fidge1

Pro Rider

Joined: Jan 2004

Posts: 649

Likes: 0

what size jet

With a slip on I would only go up 1/2 or 1 size. If you are doing air box mod then maybe go up 1.5 sizes

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