Gday all. My sister bought a atomik 160 reign that has a yx160 motor in it. She rode it for 15 mins now doesn't want it so ive bought it off her. For what it is its ok but i need more power. I have a fcr for it but would like a point in the right direction between the dirtmax 4 valve kit vs the tb head etc from DHZ. I'll be installing the kit myself.
Many thanks
Many thanks