Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I don't know if anybody still does them (but I see that 180cc kits are available for the CG125).In 1976, my room-mate at Uni bought a bored out 180cc CB125S. I can't remember the name of the supplier - it was somewhere in London I think.It was a nightmare. Multiple engine failures. There was so little metal left around the bore that it's a wonder the poor thing ever went at all!