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colorado jetting on 06 crf250r?

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Headed to colorado to ride Taylor Park. Elevation runs between 9000 and 13000 feet. What jetting should I use in my 06 crf250r. I have airbox mod, boysen qs, Yos dual pipes, fuel screw installed. I know i am running a 172 main right now in missouri. Thanks :thumbsup:

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150 main jet

needle clip 2

42 pilot jet

1.5 turns fuel screw

Try that it is for a 05, but it has a fmf exhaust. It should at least be a start...it ran great up in Taylor Park last year.

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