Carbon Fiber

Carbon fiber frames are very strong and stiff. They are made by braiding fibers of carbon and affixing them with a very strong glue (epoxy). These kind of frames allow for unique frame shapes because they can be molded to the proper shape much easier than metal alloys. Carbon fiber can crack so watch out for that.

Positives:
* Great Strength
* Great Stiffness
* Very Light
* No Rust

Negatives:
* Expensive
* Prone To Breakage