Jetting Help Please for a 2007 WR450F

Can someone please tell me how to jet a 2007 wr450f? The bike is stock except I removed the spark arester. Also, which jetting kit is best? I also made the bike street legal with a lighting kit etc. Thank you, Bruce

I recommend the JD jet kit. I have tried everything else, and the JD is the easiest to get right the first time.

Great, thank you. What about a full exhaust system or a slip-on, or just modifing the existing muffler? What is the best thing to do there?

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