You'd imagine that something as straightforward as a bike rack would be easy to pick out and simply buy right? It's essentially something made of metal or plastic you hang your bike on or stick your bike in. Unfortunately, like with most modern gadgets and accessories, it's just not that simple. Bike racks also known as bicycle racks, come in several shapes and sizes. Each one serves a specific need, takes up a certain amount of space and costs you a certain amount of money.