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I was thinking. And While I was able to ride my 85 KDX 200 for a short period of time, I could never hit high rpm while riding. Yet when i slip into neutral, I can redline. Do these bikes have governors? How does the rev limiter work? Can the Governor be broken?Thanks.

thy do not have rev limiters but the CDI timing curve is not set to optimize power at high rpm.
other than that there is the design of the expansion chamber. The shorter the distance from piston to baffle, the higher the rpm can be reached. It kinda serves as a natural rev limiter.

Both the E & H series kdx ( 200/220 ) Have adjustable governor , there's a spring which can be changed for a lighter one inside the R/H casing that under centrafugal force moves the powervalve, a lighter spring makes it opperate sooner, I can't remember but I think Moose racing made them , you can also remove 1 or both of the small copper washers under the L/H powervalve nut, this makes the powervalve open later, or if you just remove the little ball bearing & spring from under this nut then the powervalve opens sooner.

well even if his KIPS was disconnected and opening or closing when it wanted to, that wouldn't prevent high revs from happening. He wanted to know why he can't get it to rev high when riding it. Sounds like a jetting or ignition problem.

Jaguar wrote:well even if his KIPS was disconnected and opening or closing when it wanted to, that wouldn't prevent high revs from happening. He wanted to know why he can't get it to rev high when riding it. Sounds like a jetting or ignition problem.

Where would the power valve be? I don't see it on my bike

If its an 85 you dont have one. 86 was the first year of powervalves in the kdx