I have a 78 kx125 been sitting a few years and it has no fire, I have good signal up till ignition coil so I figure it's bad. My problem is I don't know enough about the bike to know which aftermarket coil to buy. Any help will be appreciated thanks

 

most of the dirt bike coils are interchangeable (if the mounting hole spacing is the same).
Honda CR coils are my fav because they produce the strongest spark.