This being the non step-thru type agi/postie Honda you are inquiring about I believe?
CT125 points to CDI. A lot of work... Like one engine design has the charge circuit hardware in the sump oil like the older SL125 and the other (CDI) not..... Easiest way/fix is to find a complete post 1979 CT125 engine and just bolt it in. Been there and done both. Tim754
so true, unless ya want SL gearing, then its all engines down and swap,so its like Tim said, or getter later XL125 donk if ya not classist or is that a flow on case Tim?