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youngdawg
01-30-2005, 01:05 PM
Does anyone know the max rpm of a 4ooEX?
YFZ450Ridr
01-30-2005, 01:59 PM
this gearing calculator is telling me its 8250rpm.

http://home.earthlink.net/~gellett/400ex.htm
nosliw
01-30-2005, 02:48 PM
Originally posted by 6858-400ex
im pretty sur its 9300

yea i think so too
85atc350x
01-30-2005, 03:32 PM
With the stock cdi you can get 9000 rpm's.