The most reasonably priced component used on the Kmx125-a12 1999 Mexico Transmission is the Bolt-socket.
Parts such as the Transmission: Bolt-socket, Gear,output 4th,24t, Gear,input 2nd,14t, Gear,input 3rd&4th,17 are included in the Kmx125-a12 1999 Mexico Transmission parts fiche.
Check out any of the eighteen Transmission components enlisted.