The CR125 CDI sounds like it yields some benefits.
for some... think what a 125cc motor runs like higher quicker rev, the 125 cdi is both responsible and matched for this type of output,
might not be ideal for all,
it all depends on what your ported for and timed for and piped for...Ive got both a CR125cc and a CR250cc cdi, and im curious which will suite my needs as well ....