The Eco C7 may have an entry level price but doesn’t skimp when it comes to Dahon’s legendary folding convenience. It features a sturdy aluminum frame, Shimano drive train, and durable, components. Like most Dahon bikes, folding is best in class: it takes only 15 seconds to fold the Eco C7. Upgraded in 2011 with a Radius V handlepost and Fusion integrated fork.