Adding Mods to your rFactor server is pretty doable by yourself.
1. Download the mod to your PC.
2. Make a NEW folder on your Desktop and install the mod to that folder ( this will give you just the files for mod and nothing extra )
3. Open the folder you made and upload these files to your FTP server. Make sure to copy them to your /rfactor/ directory on the FTP server.
After you have uploaded all your tracks and mods, read here how to setup your game server to actually use them:
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Last updated Wed 26 Feb 2014