Express Custom Trailer, Custom Builds Aluminum dump trailers. Starting with the 5200lbs 5x10. Ending @ 6x12 10,000gvw $14,990.00. All Aluminum body, 12v, Hydraulic Pump. Standard side are 18" + 2x6" top crush board. Add extra height, up to 4'. Add a Roll Up Tarp Kit $600.00 Two year warranty.