Buying a less expensive carbon fiber bike can be a great way to save money on your new cycling purchase. Not only are carbon fiber bikes durable and lightweight, but they're also expensive for a reason- because they're made from high quality materials. You may be able to find a carbon fiber bike for less by looking for a used one or choosing a different frame type. For example, if you're interested in mountain biking, consider looking into carbon fiber mountain bikes instead of traditional mountain bikes made out of aluminum.