125-200cc SM125 Restrictions 2008

Hello.
I own a Husqvarna SM125 2008 motorcycle, but it isnt very powerfull.
My friends 70cc tuned scooters are faster and have better accelearation than my 125cc husqvarna.
The motorcycle is full stock, the top speed I had got on it was 104 kmh, without any wind and down from a little hill, normally on the highway i get about 90kmh. The acceleration isnt great, it is imposible to get the front wheel up just with the throttle, and at the same time, the 70cc scooters will do a wheelie if you will give it half throttle.
What restrictions dose this husky have? I have seen stock sm125`s go 120+. The sprockets are stock, 14 49.