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big bore jetting help

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I am putting an Athena big bore kit on my 2006 KX 250F. I will probably have to change jetting. Has anyone done this mod and know what jetting to use??

Thanks-

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It will be trial and error but here is what I am running on my 07 with Hot Cams.

178 Main

45 Pilot

JD Red needle #5

50 Leak

1 3/4 turns on fuel screw

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Try Dvns start point then read the kx250f jetting 201: sticky

It'll explain how to get it right..

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Thanks-

What kind of fuel do you use?

93 pump

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