I was wondering if anyone here has ever put a two stroke 250cc motor in a 125cc dirtbike? I am thinking about doing this but I don't know if the motor mounts are the same for both an 88 KX125 and an 88 KX250. I am new to dirtbikes so I don't know much about the differences between the 250 chassis and the 125 chassis. Is the motor the same for both 250cc and 125cc but with a different cylinder, piston, and connecting rod? In other words the bottom half of the motor & trans. So for example, does Honda, Yamaha, Kawasaki, and/or Suzuki use the same bottom half for both 250s and 125s and simply bolt on a 125 or 250 cylinder? Here is another idea: Could you use a 250 cylinder, piston, and connecting rod to replace the 125 motors cylinder, piston, and connecting rod?
Any info would be really appreciated.
Thanks,
Turbooutlaw