2004 Kx125 transmission

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5/28/2018 8:55 PM

So guys i need some help my dad and i had to replace the case in my kx. And some of the gears had fallen off when we transfered over the tranny, We believe we've gotten all the gears in the right order they all rolled smoothly together like they should. We got the engine back in the bike it ran fine but it only goes into first second and third there is no forth through sixth,can anyone tell me if possibly the gears have gotten mixed up or something is getting caught up so it wont shift any higher than 3rd.


5/28/2018 11:01 PM

Could the shift forks be in the wrong way? I’d get a service manual or at least cross check the gear order with the parts fitch.


5/29/2018 6:00 AM

Been there, done that, it sucks to say the least.

Parts fiche is most definitely your friend in putting it back in the right order.


If you're not mixing gas, you're not haulin ass.

5/29/2018 6:05 AM

Gears out of order or you didnt put the forks in the right groove on the drum.

Just a tip, before you put silicone between the cases, make sure you can shift thru the gears all the way before you fully assemble it