Flat Top Trailer

This Trailer plan is for a Tough, Heavy Duty and Versatile dual axle Flat Top trailer in the size of (8 x 6 ft.) 2440×1830. The Sub-frame is of strong RHS with plenty of support using 4 Chassis cross members. The body sides can be purchased at most trailer suppliers.

Included in this Trailer Plan
  • All Drawings
  • Pictures
  • Part and Cut Lists
  • General Advice
  • All in PDF file Format



With these plans you will be able to build your own Tandem Flat Top Trailer, as there are so many options available with different side and tail gate heights, plus you can have H Racks, under body tool boxes just like a Ute. A design with many options like, tie rails, and stand up spare wheel options to allow room for a tool box on the drawbar.

This Trailer can be made in a Single or Tandem Axles and depending on the running gear selected can have a good selection of weight load ratings, there are a number of brake options available such as Mechanical Override Drum and Disc, Hydraulic Override, Electric Drum Brakes and depending on the required load rating you are after to which type is needed.

A 1200L x 400W x 400H Tool Box can be an option on the Drawbar with the drawing supplied.

The Floor can be made from 2.1 or 3 mm Steel Checker Plate, 1.6 – 2mm Zincanneal or Galvanized Sheet.

As another available option to this trailer is having a steel mesh panel inserted into the head board and the Ute sides can be made to any height and the spare can be laid down.

The plans conform to the Australian National Code of Practice – Building Small Trailers (VSB1). Trailers built to comply with this code of practice can be registered for on-road use in Australia


    Tandem Dual Axle Flat Top Trailer
  • Size 8 x 6 ft. (2440 x 1830 mm)
  • Gross Vehicle Mass (GVM) of up to 2000kg
  • Weight of Trailer (ATM) approximately 450kg
  • Bottom Chassis Construction – 75 x 50 RHS
  • Top Chassis – 50 x 50 and 65 x 35 RHS
  • Drawbar – 100 x 50 RHS
  • Roller Rocker Suspension
  • Drop and removable Sides
  • Spare Wheel Mount
  • Head Board
  • Swing up Jockey Wheel
  • 45 mm Square Axles