Aspen’s E-Series (Equipment Series) trailers are equipment/machinery hauling trailers which primarily serve the construction industry. Configurations vary from payloads of 55 tons through 85 ton capacities, with axle configurations ranging from 8 through 13 axles (including truck axles). Aspen E-Series trailers are highly modular with “plug and play” components which allows flexibility in changing trailer configurations. Goosenecks are hydraulically removable which can be connected to a variety of decks including double drop configurations in flush, cantilever (drop side) with square tail rear frames. The E-Series trailers have common air/regulated air suspensions and are available in specific regional configurations to maximize trailer configurations for specific regional regulations.