I have a 1985 Honda CG125. The ignition uses contact points, I plan to convert it to CDI. Nowadays, it is difficult to buy contact points and is troublesome to maintain them.

What will I need to replace for the conversion, and are those parts available?

1 Answer 1


I did a search for "cdi conversion kit motorcycle" and found these two videos on YouTube:

I also tried searching for "honda CG125 cdi ignition conversion kit" and found this:

  • Can I just replace with CD125 ingnition coil and CG125 CDI and rectifier unit.? Commented Dec 18, 2016 at 9:55
  • It sure looks that way (with the caveat that I work mostly on diesels and have never worked on small engines).
    – dlu
    Commented Dec 18, 2016 at 17:04
  • Any idea how to fix those stuff, like single line drawing to refer to. Commented Dec 18, 2016 at 23:56

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