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I don't have my motor back but I will soon and just want to know where to start. It's a 05 crf 250x with a r cam, Dr. D pipe, and RPM's 276 kit. What would be a good starting point for jetting? :banghead:

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i have a 158 main and moved the needle clip down one from stock and everything else is stock. sorry i don't know what that is right now but i guess my question is will this be ok to break in the new motor? i think i was to rich before do to the amount of oil i was burning

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test ride it with the current jetting and go from there.

most of the time big bore require a little less main jet.

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