After many research and many thoughts I have decided to install a Pinasco 177 cc Kit on my PX125 (2004), also I have bought a Carb Si 24/24 and a Simonini pipe. I think I know how Jetting and Timing it in the right way.
I am doing half city/half highway
The question then is:
¿ Should I do something with my gearing or the stock one will be ok ? [?
Many thaks to all of you