Dirt bikes are available for sale online at CycleTrader.com, BikeFinds.com and eBay.com, as of March 2015. Most of CycleTrader.com's listings are by dealerships, including its used selection.
BikeFinds.com categorizes dirt bikes based on their type, make and model. The site aggregates available dirt bikes from across the United States, and they include KTM, Husqvarna and the major Japanese manufacturers. Users also are able to sort listings based on their state or city.
CycleTrader.com's selection is more comprehensive because it includes 2015 models. Makers include BMW, Husaberg and Beta, but the overwhelming majority of available bikes come from Japanese makers. Users can refine results by year, mileage and other criteria.