I have decided I am done with motorized bicycles. I just bought a beautiful 2012 Symba (Cub). I saw it and had to have it. It did need some sorting out and cosmetic stuff. Today it is pristine. This thing runs really good, it shifts a little hard but as I get trained on it things are better. It is an under bone design with a 101 cc. motor. Overhead cam 6.8 hp. 5 ft, lb. torque. Suppose to go 59 mph. But I don't know. It has a automatic clutch with a 4 speed transmission. With 17 inch wheels it is very comfortable and stable. This is also a very quiet motor and it gets a conversation anywhere I take it. BTW. I do have a 29 inch bike with a 66 cc. Bike Berry motor in it for sale started once never ridden.