Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)

99 cr250

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kneedrager428:
So I am thinking of using a 99 cr250 for my kx500af project. Is there any info on this swap? I have searched and came up with nothing. I have the engine in the frame and surprisingly the swingarm bolt and the lower engine mount line right up. The front mount is only like 1/2 inch off. So it seems like the mounting will be the easy part.

Does anybody know if the cr500af pipe would come close to fitting my application?
I have put some pics here:
http://office.flyelite.com/dan/KX500%20CR250
Let me know what you think and any info on pipes would be much appreciated. Thanks, Dan

gothminist3r:
Hows the spacing for the spark plug and the top engine mounting?

Looks very do-able. This seems to be much less hassles than using KX alu frames.

Ta 4 sharing and please post progress!

kneedrager428:
It looks like a regular plug will work. With the tank on it looks OK. I will try a plug in it to be sure but I am still wondering about a pipe solution. There are not many fab shops around here and None that i know of that have 2 stroke experience.

kneedrager428:
Also There will be no progress if I cant figure out a pipe. I will finish my original 500 restoration. I will not get rid of my 500 rolling chassis if I finish this as I like to have the option of having a mint 500 if I wanted.

jfabmotorsports.com:
The pipe is easy. Finish the bike and send it to me. You get a fat pipe and a skinny wallet!  :-D

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