crazy

Hello I'm still new here but have been reading threw threads for months and have gotten tons of great info. I'm interested in building a dirt bike style motorized bike out of a good mountain bike frame. Has anyone tried this? Had success or failure? Why would it be or not be a...

hey guys, im eventually looking to get my 48cc bike up to 55 mph to make it capable of in-city highways, as I have a long way to go to achieve this im gonna tell u all what ive done so far and plan to do so u guys can tell me if I missed something, I have a 48cc silverjet with a ghetto air...