My brother is trying to restore his 1985 250sx. I was put in charge of finding parts. Problem is there aren't any left !! He wants a bigger cam, in which I was able to find at James Lucky, but it is back-ordered. The biggest problem so far has been finding an aftermarket piston. Wiseco doesn't list one anymore.

If anyone know where to find any parts for this bike please tell me.

Thanks

 

I am pretty sure that it is the same motor as what's in the older fourtrax 250, try that.