The Fontaine Magnitude 55MX is an extendable heavy-haul trailer that features a modular design. The trailer is fabricated with 100,000-lb. minimum yield steel flanges and extends from 29 to 50 feet. The loaded deck height is 20 inches with a 6-in. ground clearance. Ride-height adjustments mechanically lock, and the ramped bogie features a modular connection. The trailer also has a built-in tool box and storage compartments.