Need Help with High Elevation Jetting

Hello, I live in Delaware and I ride between sea level and about 2000 ft. at Tower City PA. This August however I'm going to Crested Butte, CO to ride for a few days with a friend from Aspen. My friend tells me that we will be between 8000 ft. and 12000 ft.. I have an 01 YZ 426 with stock jetting.

Do any of you ride at these altitudes, and if so, can you help me with what jetting to run?

Thanks a lot.


John, might help you out if you go to the Technical, then to High elevation jettings, on this site...Hope this helps....Tim :)

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