Dear all;
coming back to my topic after a very long time and want to share some experiences. AS I switched to Mehran and stopped biking for my health reasons, I did some experiments in the same context. some were successful.
1) used a 200 CC carburetor. It helped to take much air into the engine.
2) Performance racing intake. (helped engine to breath better)
3) front chain gear increased to 17 teeth. and rear to lesser teeth (don't remember now, it helped the bike reach to 110 km/hr in 3rd gear).
4) five gear shifter gear box.
5) Better performance homemade muffler with bigger pipes.
with aforementioned mods, I can beat any bike in 125 cc class. Still searching for racing CDI's though.
Good luck guys.