: Navigate to your local documents folder for the game: Documents\PiBoSo\MX Bikes\mods\tracks
: The original release thread for this track is hosted on the MX Bikes Forum , where the creator often posts direct download links (such as MEGA or Mediafire). How to Install the .pkz File
Once you have downloaded the .pkz file, follow these steps to use it in-game:
: Move the .pkz file into the appropriate subfolder (e.g., Motocross or Supercross ).
The file is a track mod for the simulator MX Bikes , which features a replica of the real-world Underground MX facility in Kemp, Texas. Where to Download
: The track should now appear in your in-game track selection list.
: If you receive an error stating the file is "damaged" when trying to open it with WinRAR or 7-Zip, this is normal. .pkz files are encrypted game archives and are intended to be placed directly into the mods folder without being extracted. Issue Installing Tracks - MX Bikes Official Forum
: The primary site for game modifications. You can search for "Underground MX" directly on MXB-Mods.com .