power valve governor spring swap

[dirk_411]

Hey guys.  Just wondering if there is a preferred year governor spring that is popular.  I have read a fair bit eluding to the 2003 kx250 spring being soft and most people preferred the 2004 spring.  There was enough material that spoke of the 90-91 spring too. It seemed different springs change the power valve operating range. Again its only what I read and I have no idea about cross referenced parts.  I actually found most of the info on other sites,  Any feed back appreciated.

[KXDINO]

kx250 03 needed a extra shim put in ,1mm thick that and a pc pipe did wonders.One of the magazines had a article on it years ago plus the Kawasaki race tuning information had its as well,p/n92026-1590 it goes between the bearing and the existing  spacer it help the low to midrange speed transition smooth ,it worked on the 03 I had.The spacer is fairly cheap as well.

[dirk_411]

Ok.  Anyone else?

[Foxx4Beaver]

try sending The Flyin Hawaiian a PM...he was/is BIG into tuning the 03-04 Ms...and does a lot of enduros and hare scrambles with them.