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JD jet kits?

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Hey guys, I was browsing the thumpertalk store the other day and saw that the jd jet kits were listed as 96-99 and 00-09 on the yz 250. Two things i thought was weird, 1: 99 is the first year of the new motor so maybe it's just me but I would think that the 96-98 jetting would be different. 2: I originally wanted a jd jet kit for my bike (01 yz250) but everywhere but the thumpertalk store that I saw, including the James Dean web site, lists the jd jet kit as 02+. I'm assuming the kit should work with the 99+ motors but can anyone confirm this? Also, is the kit worth the money and/or does someone have any jetting specs for my bike that would be close? I live in northern WA close to sea level. Thanks in advance for any help.

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Start with stock jet specs, but try the N3EW needle. That would be a good starting point I believe without having to by the kit.

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JD recommended the newer kit for my 97. In other words he had me buy the 00-09 kit and use it in my 97.

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