The Extrabike is an efficient, practical, low-cost solution for people in our project sites requiring a method of transporting cargo or passengers on a daily basis. Requiring only an existing bicycle and commonly available tools for installation, the Extrabike adapts any typical bicycle to a configuration better suited for hauling purposes. The advantages the Extrabike has over standard rear racks in terms of hauling are a lower positioning of the weight for greater stability and the extension of the wheelbase to avoid interference of the load with the rider's pedal stroke.

Designed in South Africa by one of Worldbike's founders, Ross Evans, in 1999, the Extrabike addresses both the practical issues of hauling goods via bicycle as well as the issue of affordability. Considering that the average Kenyan earns around $400 annually, the Extrabike is far more economically feasible compared to other possible methods of transport such as an automobile or even a three-wheeled bicycle rickshaw. Why is the Extrabike so affordable? Because it has few moving parts, and re-uses the rear wheel, brakes, and drivetrain of the original bicycle.