RailsDupeFix is a lightweight server-side Fabric mod that prevents rail duplication caused by piston interactions by making rails immovable.
It fixes a vanilla edge case where rails can be displaced or broken during piston block movement, which can be exploited for duplication glitches.
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 26.1.2
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as RailsDupeFix_26.1.2-1.0.0.jar — drop this file into the mods folder
- Download size: 4 KB
- Download link checked 23 Aug 2026 — working
These come from our own check of the pack file, not from the source page.