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berries400ex
02-10-2009, 08:35 AM
im rebuliding my 02 400ex. im putting a 416 12:1 piston, hotcam stage one cam, new vavles, cleaning up the ports and putting in a new crank. and im goin to remove the choke.

i was wondering wat would be the best jetting for this setup and im mostly riding trails and in feilds?

anyhelp would be great.

berries400ex
02-10-2009, 08:39 AM
and im also puttin in a uni filter and takin off the airbox lid

02-10-2009, 12:41 PM
read this:

http://www.jetsrus.com/FAQ_jet_kit.htm