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2004 CRF 250X jetting for altitude

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Finally got my wife's CRF 250X jetting dialed in for high altitude trail riding and thought I would post what I ended up with:

We live on the Colorado front range and usually ride trails between 7,000 to 12,000 ft.  We tried to stay with stock Honda parts and not many mods.

Main: 125

Pilot: 42

Stock NCVT needle: 4th clip down (But may also recomend the NCVQ needle from a 2004 Yamaha 450)

Leak jet to accelerator pump: 50

Pilot Screw (TM design works): 2 1/4 turn out

O ring mod on accelerator pump

Snorkle only removed on air cleaner box

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