@Fida: Welcome aboard!!! RX125 were very few which hit the Pakistani market, RX125 is a nice machine, but spare parts are almost to non in the market and even in the scrap market.
I will not suggest you this bike, plus I am not aware of this machine.
@Ali: very well suggested 
@Fida: keep on searching you will find one...... Rx115 are more in number than Rx125, plus the 115 technical line up can be reached, but rx125 almost zero to find in spares...
Good Luck for your plans.....
Thanks...... 