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2007 crf280 jetting question

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I just bought a 2007 crf250 a few weeks ago; an upgrade from the 03 yz250f. The bike has some mods like full fmf exhaust (header and silencer), 280 big bore kit from athena, hotcams camshaft and i think thats it. I was wondering what the jetting should be on that because im pretty sure it still has the stock jetting. I ride in northern ontario, not far above sea level, i live right beside the northern great lakes. Just looking for a setting that'll perform well for a trail rider in all temps, i dont race but i like power to be there for when i decide to give er hell. Got the whole motor apart because the shop my friend had it at didnt clean the motor out during the rebuild.

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