It is possible to find 50cc motorcycles for sale on eBay and Mega Motor Madness. The eBay auction site puts you in contact with sellers, whereas Mega Motor Madness only sells what is in its inventory.
There are two ways to buy a 50cc motorcycle on eBay. You can either buy one at a fixed price via the Buy It Now feature or bid on an ongoing auction. Customers can also use the filters on the left, as of 2015, to find the 50cc motorcycles that best suit their needs.
Mega Motor Madness categorizes its inventory first by motorcycle type and then by engine size. Pick a motorcycle type from the menu on the left, and then click 50cc to see the 50cc motorcycles listed in that category.