INSTRUCTIONS - Rear Inner Guards (Isuzu D-max and Mazda BT-50 2020 Onwards) Posted on 15 Aug 11:38

Installation Guide:

The installation of the Rear Innerguards requires minimal mechanical knowledge and tools. It is important to follow these instructions.


  • Drill
  • Crimper if you chose the rivnut hardware
  • Hot air gun/hair dryer
  • Alan Key Set


  1. Firstly note the holes in the innerguards, these will line up with the bolt holes in the car already. You will need to drill these holes out to 9mm if you are using rivnuts, or 11mm if you are using rubber nuts.                                                                   
  2. Install either the rivnuts or rubber inserts. 

  3. The innerguards are packaged flat but do need to be bent, this bend can be done by hand and there is no risk of breaking the HDPE innerguards.

  4. The HDPE is easier to bend with light heat. Avoid too much heat as the material can melt. As it is slowly heated up you will notice it becomes more pliable.

  5. The areas needing to be bent are marked in the cnc cuttings. The small triangles you see form the bend line. Draw a line from the tip of each triangle and follow this to make a sharp bend. (Depending on the manufacturer, some guards will have a 90 degree groove cut into them indicating the bend line. Follow that line if yours has it.) It is much easier to use a corner of a bench, clamp or vice if you have one. The first bend area shown needs to be a 90 degree bend, and the second bend area shown needs to be 2x 50 degree bends. Hold in shape until the material cools. 
    NOTE: The innerguards do not have to hold the perfect shape, once they are bolted up they will form to the correct shape and hold. The heating and bending stage is only to assist the install.

  6. Once bends are completed the panels are ready to bolt in. The tabs shown below locate in the body and chassis as seen in the second photo. It might be a tight fit in the chassis due to manufacturing tolerances, however this area can be opened up with a flat screw driver slightly to help the guard slip in.


If you have any issues please contact me and I am more than happy to assist.

All the best with your 4weeling. Stay safe.