Tamiya offers a Semi-Trailer model that can be hitched-up to the 1/14 scale R/C tractor truck. The box type trailer uses hard anodized aluminium panels for the utmost durability and realism. The rear gate doors are openable as seen on full sized trailers.  
  
Features

Length: 886mm
Width: 186mm
Rear Tread: 138mm
Weight: 5360g
Chassis: Aluminium ladder
Suspension: Solid Axle
Damper Type: Metal friction
Wheels & Tires: Chrome/Radial