ATV specialty stores such as ATVParts.com and Power Sports Nation sell both new and used parts for four-wheelers and other motor-sports vehicles. Online auction sites such as eBay also list a variety of used four-wheeler parts.
ATVParts.com allows users to search its inventory by part number, make and model of the vehicle or keyword as well as by browsing a list of available parts through category listings or microfiche. Listings for each part contain information about the selling price, quantity available and manufacturer of the part. The site also has a special section for aftermarket parts and a tool for finding parts via the individual OEM number.
The listings for used parts sold through Power Sports Nation feature pictures of the part, so potential buyers have a realistic idea of the exact condition and appearance of the part. Each listing contains a breakdown of the part's condition and a list of similar parts that are available on the site.
EBay uses an auction-style pricing system for new and used items sold on the site, including four-wheeler parts. The seller sets a specific starting price and a selling period in which users can bid on the item. Some sellers allow buyers to purchase the part outright without going through the auction process.