ModsJava
26.3 Slab and Stair Backport
Java mod listed for Minecraft 1.21. Downloads from the MC Java Mods app on Android.
⬇ Download on Modrinth
A quick mod I popped together for my Fabric Cobblemon server, as there were no 1.21.1 Fabric backports for wool or concrete stairs and slabs.
How to install this mod?
- Download Fabric from www.fabricmc.net and run the installer.
- Open .minecraft/mods and drag and drop the mod .jar into the folder.
- Load the game!
What if I need another mod loader/MC version?
Check out these mods by AlexMuseMatrix for other loaders or versions:
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- 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.
File checked by MCModsHub
- Ships as slabStairBackport-1.1.jar — drop this file into the mods folder
- Download size: 2.2 MB
- Download link checked 23 Sept 2026 — working
These come from our own check of the pack file, not from the source page.