You can typically find and download this track through the following community hubs:
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 Download File Underground Mx.pkz
: Navigate to your local documents folder for the game: Documents\PiBoSo\MX Bikes\mods\tracks You can typically find and download this track
: 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 Issue Installing Tracks - MX Bikes Official Forum
: The primary site for game modifications. You can search for "Underground MX" directly on MXB-Mods.com .
: Move the .pkz file into the appropriate subfolder (e.g., Motocross or Supercross ).
Once you have downloaded the .pkz file, follow these steps to use it in-game: