RIIKO® Gravel Superstructures made of modern high-strength steel guarantee maximum payload for your truck and trailer. Thanks to Raex 650 structural steel, the RIIKO® Gravel Superstructure is durable, and the load volume is top class. The inner surfaces of RIIKO® Gravel Boxes are coated with Hardox 450 steel to bring more wear resistance. In addition, additional reinforcements on the chassis, among other things, ensure that the structure can withstand heavy use.