KX Chain rubbing

[MikeKX250]

I put an RK X-ring chain on my 99 KX250 and it rubs on the transmission case around the countershaft. It has only ground off a thousandth`s I don`t think It will wear much more. I can live with it rubbing a little, I`m sick of going through regular chains every few months.
SeniorKXrider, you are lucky your transmission case must have made in a different mold than mine. I know yours dosen`t rub ( wanna trade bikes?) The guys at the shop near my house have tried every other make of O-ring chain on their KX`s, now I tried the RK and it rubs to.

 

[kevinkdx]

I had this trouble with my KDX 250 and i just decided to go back to the standard NON-o-ring chain and not deal with it. although in your case it doesn't sound as bad as mine becuase mien was very noticable. if it doesn't wear anymore than what it is now i wouldn't worry too much about it, but keep an eye on it and if it doesn't wear anymore it should be ok.