Dumper trailers manufactured in Norway by Mørkmaskin GD4 30HS: The GD4-30HS is the largest dumper trailer in their lineup to date. - Price: $34.200 - Capacity: 23.000 L GD4 20HS: GD4-20HS is the largest 2 axled dumper trailer. - Price: $18.500 - Capacity: 7.300 - 17.500 Liters - Changelog 1.0.0.2: Grain walls for the GD4-20HS Manual opening for hydraulic hatch on GD4-20HS Rim color configurations More color configurations (Blue, Red and Green) Configuration for Mustang brand