2016 KZ RV MXT MXT20, 2016 KZ RV MXT MXT20 The MXT is a lightweight travel trailer toy hauler with a perfect combination of forward thinking design, modern technology and skilled craftsmanship. The MXT is engineered with an aerodynamic design to reduce wind drag and improve fuel mileage for your tow vehicle. The MXT is available in 8 floorplans that range from 22' 10" to 35' 7".