If your looking to start building a mb, this is the place to be! You can look up motors and kits from any website. A good website where I get all my pars is:
Kings Motor Bikes,Motorized Bicycle,Bicycle Engine Kit,Bicycle motors,bicycle engine kit parts
If your just interested in mb's in general, then you can search anything that comes to mind! Welcome to the community.
When I get mad, I roll around on the floor next to my motorbike, slamming my fists into the floor, and I yell at the top of my lungs: @#☆ #@! @☆C ?$! ☆!@