The risk isn’t worth the reward. You’ll find many dead torrents labeled “Cities.Skylines.M.Transit.Update.v1.7.2f1-CODEX” that either don’t work or contain trojans.
The search term refers to a specific historical version of Cities: Skylines released by the scene group CODEX. This update corresponds to the release of the DLC. While this version is often sought for its stability or compatibility with specific legacy mods, it represents an outdated version of the game (current game versions are significantly higher, e.g., v1.17+). Users seeking this specific build usually aim to avoid bugs introduced in later updates or to utilize mods that were broken by subsequent patches. The risk isn’t worth the reward
If you have an older PC or want a "better" modding experience without crashes, rolling back to or installing is a common practice among archival players. This update corresponds to the release of the DLC