Maintenance & Technical > KX500 Aluminum Frame Conversion (AFC)

2014 KX 250F/KX500 AFC

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tkeen511:
So after years of studying, saving, planning, searching for a decent blown up bike, and finding the time, I'm finally starting my aluminum frame conversion. The donor bike is a 98 kx 250, whom I've named fokxy cleopatra, and have been in a pretty committed relationship with for about 5 seasons. But it's time for a face lift. I recently purchased a running 2013 kx 250f to use, but then about a month later came upon a deal I couldn't pass up on a 2014 kx 250f which the connecting rod snapped, punched a hole through both cases, and wedged the piston completely sideways inside the cylinder after only 29 hours of use. Huge bummer for the original owner, but a gold mine for a guy like me. Im excited to finally be getting started, I started taking a few bolts off the 14 tonight.

Here's the donor bike



And now the 14.....


Took off a few bolts

Till a few became "only a few left"


Finally had the whole thing apart.

Here's a 2 stroke kx 250 motor I managed to score on ebay with a completely destroyed bottom end and an irreparable cylinder. Cheap and works perfect for me to use as a Light weight mock up motor while my actual motor will be being rebuilt.

tkeen511:
I also now have an extra 2013 kx 250f frame in good condition, a bunch of extra parts for the 2014 kx 250f(radiators, brain box, all electrical, fuel injector, etc), and would entertain trades of my forks for a set of air forks, and now have a whole rolling chassis for a 98 kx 250, awesome for a cheap kdx conversion or potentially 500 conversion. If anybody's interested in any of that, just let me know.

jBernard:
how much did you snag the '14 for? always curious to know what guys let them go for that dont want to bother parting them out but know the repair bill is going to be several thousand $.

tkeen511:

--- Quote from: jBernard on January 02, 2016, 05:45:10 AM ---how much did you snag the '14 for? always curious to know what guys let them go for that dont want to bother parting them out but know the repair bill is going to be several thousand $.



--- End quote ---
I paid $1500 for it delivered to my door step. It's not perfect obviously. Could use fork seals, brake pads, tires, the usual. But a lot better deal in the long run. He was either looking at having to buy a completely new motor, or pay service Honda to convert it, and neither were cheap. I don't know how I'd feel about putting a 500 in a fuel injected 250f though. Taking it apart, everything is very very tight and very limited space for EVERYTHING just with the 250f. 500 might be pushing it. The non fuel injected 250fs seem to have some more room.

jBernard:
thats a killer deal for sure. that frame on ebay would bring 600+ easy.
how far are you planning on taking the conversion with aftermarket parts or is it just more a engine swap?

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