Engine differences between 1993 model and 2001

Engine differences 1993 & 2001 [CR/KDX Hybrid related matter]

Speaking specifically about the 200.

I have an issue with my CR/KDX200 hybrid bike. The pipe.

The only pipes I have been able to get used and at a reasonable price are from late model bikes, stock pipe and silencer. They fit with minor modifications

The motor in my hybrid is a 93.

I modified a late model 220 pipe when i built the bike. The bike runs ok but is majorly lacking top end.

I have done some reasearch and have found that once the 220 was introduced in 1997, it acutally uses the same pipe as the 200.

So I am not sure if there are engine differences in the later model bikes when compairing to the older versions (1993) that could be causing my trouble.

On the flip side to that, it could be my modifications to the expansion chamber that caused the lack in top end.

So i have a fresh pipe to work with and was thinking of cutting it completely apart and removing the inner baffle and insulation.


I have no idea if a larger expansion chamber will help top end or low end.

Do you guys have any ideas for me?

PS. I originally tried to use a modified CR125 pro circuit pipe. It fit like a dream but the bike did not run correctly at all.

thanks for the input guys.

i might have to bite the bullet and buy a new aftermarket pipe, cut it up and hope for the best.