Malossi cdi unit runner 180

Hi!! I can't speak english very well but I try.

I've got an SR 125 with 172cc. malossi AC, phbl 25 bd,simonini exhaust etc; can you tell me why in this description ( ) you say that "malossi cdi unit" for runner 180 is not for air cooled motors such as Typhoon,Skipper and SR 125?? 

Thank you very much and sorry for my english... [:)]