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KX 250 engine parts interchangeability 93-04?

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Hello!

I would like to know if the gaskets are interchangeable between models. My engine is 1999 model. Does 2003 year top end gasket fit 1999 engine?

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This site works, but doesnt recognise my vin JKAKX250LLA032384

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Just do the search by year/model. It works fine. After you get to the parts diagrams for your year you can click on each individual part number and it tells you the compatible years.

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Sometimes the part will work but it doesn't say that on the factory fiche. I've spent probably an hour and a half trying to cross parts on the factory fiche for my 92. Also, i try to get info from more than one source to make sure before i'll order a part.

 

i've gotten a lot of info about my honda from oem cycle, they also have the link to their used parts.  i didn't realise they had info on the kx250 but they do. :thumbsup:  it's a good source of quick, easy to decipher info. http://www.oem-cycle.com/KAWASAKIKX250BIKEID.shtml

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So has anybody tried the 05-07 piston on 92-04 cylinder?

IMO these motors are very different. Compression on 05+ is massive compared to 04-. I bought a Namura piston kit for my '99 at $57. I don't think a 05+ piston will save you any money.

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Well I found one cheaper than the Namura. I comperad the porting and the newer ones dont have sub intake ports. Are the piston wrist pins and rings interchangeable?

Edited by mikkh

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Bro, you can't find a $50 stock piston?  Just buy the right part!

Where you can get the kit for that cheap? By the way I have 98 engine.

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Aren’t you the guy who was trying to find o-ring gaskets and carb parts from a hardware store?  :excuseme:

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Aren’t you the guy who was trying to find o-ring gaskets and carb parts from a hardware store?  :excuseme:

Bought rear shock o-rings and piston band from hyraulics store. They work great.

No updates on piston compability?

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I know that already, but I want to know do the newer pistons work (05-07)? I know they arent´t the same, but has anyone tried them?

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I know that already, but I want to know do the newer pistons work (05-07)? I know they arent´t the same, but has anyone tried them?

 

If they are not the same I don't think anyone would consider trying them. Why would someone intentionally try to destroy their motor? Stuff costs money and most dirt bikers are not willing to waste it. :bonk: :bonk: :bonk: :bonk: :thinking::goofy: 

 

 

IMO these motors are very different. Compression on 05+ is massive compared to 04-. I bought a Namura piston kit for my '99 at $57. I don't think a 05+ piston will save you any money.

 

What he said. ^

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I know that already, but I want to know do the newer pistons work (05-07)? I know they arent´t the same, but has anyone tried them?

 

 

The KX250 had a 66.4 x 72mm bore/stroke from 1992 to 2007. All years used domed pistons. If I'm not mistaken, the rod length has also remained the same, as well as the deck height. But what I don't know (because I've had no reason to compare ) is if the piston pin and bearing is the same diameter and width. And the porting for the '05-'07 engines is very different than the previous engines, so there is a good possibility that the ring locator pin is in the wrong place.

 

The intake window is irrelevant, depending on what your tuning goals are.

 

It would be a simple task for someone with older and newer engines laying round to figure out, but there really isn't a necessity since parts are plentiful for both generations.

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