I just bought a used Kymco K-pipe 50, and right now it's going too fast to be legal (I live in Finland). under me it goes about 70km/h and from what i heard from the dude who i bought it from, he had only changed the carburetor. What i need is to change either one of the sprockets to make the bike go somewhere around 55km/h. Do any of you have links to smaller front sprockets or bigger back sprockets and chains that fit with them? Thanks!