Third-world charities can buy complete decent quality bicycles for about $30 from local manufacturers. If you want to support them, cash donations are a lot more effective. Cash is easier to transport and the local manufacturers provide jobs to the local population. World Bicycle Relief has been recognized as one of the world's top charities of any kind: http://www.worldbicyclerelief.org/

If you want to donate products, there are a number of great local charities that can use them more efficiently.