well too be honest i can believe u did whole meter with 125, but for junnon, i cant agree bcz there is a lot difference of horse powers and logically it cant go faster or equal to 125 cc bike , anyways dont buy a 50 or 80 cc two strokes coz they are not meant for u and u willl always find trouble while riding these old machines,
best option is to get a 70 cc, unique or an other brand ,