Some people doesn't even know the forced induction concept yet they're oh so sure that a turbo or nitro Kit will work on a small 50cc or 125cc engine like a charm! I call it day dreaming.
Even if someone somehow manage to fit that tiny little turbo in a CG, their are other so many factor to keep and eye one.
My advise, forget force induction and look for a BIG BORE KIT. I've seen plenty of 125cc bike advertisements which are bored up to 180cc in Europe. Miles better than any Nitros or turbos. BTW, "NOS" is a company name and it doesn't make Nitronus oxide kits!!!