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I just bought a 2005 KDX 220. I will be installing a FMF Gnarly Desert pipe and using the stock silencer. I have a twin air filter and the airbox top removed. A friend of mine has the CEK (3rd clip position) needle, 150MJ, and 40PJ that he will give me. My elevation is sea level to 3,000ft and temp is 50-90. Also, the bike has the stock 33mm carb. Would this be a good place to start for the jetting?

If your carb has not been modified by RB-designs then a CEL or DEL will be the needle you will want to use.

The DEK and CEK are best for modified carbs.

thanks...what clip position, PJ, and MJ should I use with the CEL needle?

Always start on the middle clip position with a new needle.

PJ and MJ help should be along shortly. I am a 200 guy and do not want to suggest that jetting in a 33mm carb.

You can look in the Members Profiles forum and check out some of their jetting on the 220's while you wait.

Thanks for the help. I know I will have to fine tune it, but I want to find a good starting point. I'll take your advise and look at some profiles while I wait for some 220 experts.

Thanks again

i'm at 620ft altitude from sea level riding at the same temperature of you, my pilot is 40, JD jetting needle to 2 clip from te top, main jet 140 and 142, i have a fmf gnarly pipe with the powercore 2 silencer, airbox snorkel removed. IPONE S2 oil at 50:1. and it goes well

just a quick one i was looking on the Kehien website and it talks of Main Jets and Slow Jets is the Slow Jet the Pilot Jet or something tottally different please excuse my ignorance.

Correct. The 'slow jet' is the pilot jet.