Copy the contents of the CODEX folder from the mounted drive into the game's installation directory, overwriting existing files.
Right-click on Part 1 and select "Extract Here" using WinRAR or 7-Zip. This will automatically pull the data from Part 4 and all other segments to recreate the full ISO. RIDE.3.CODEX.part4.rar
Ensure you have all parts (part1, part2, part3, etc.) in the same folder. Copy the contents of the CODEX folder from