How do I install Mekanism: Tiered Outlines (MTO)?

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. Opens on CurseForge — not every file is mirrored on our own servers.

What Minecraft version does Mekanism: Tiered Outlines (MTO) work with?

The listing gives Minecraft 1.21.1, 1.20.1. This is the version stated by the author or source site, not something we verified ourselves.

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Mekanism: Tiered Outlines (MTO)

Java mod listed for Minecraft 1.20–1.21. Downloads from the MC Java Mods app on Android.

by iristhepianist · on CurseForge

Simple mod which replaces block borders for certain tiered mekanism blocks with custom borders corresponding to their tier.

Which build do you need?

This mod ships a separate file for every mod loader and every version of the game. Pick both, then download — the wrong build installs fine and then does nothing in the game.

Mod loader

Mod loader Forge2 builds
Mod loader NeoForge1 build

Minecraft version

Minecraft 1.21.1Newest
Minecraft 1.20.1

Minecraft 1.21.1Newest

⬇ Download for 1.21.1 · Forge ⬇ Download for 1.20.1 · Forge ⬇ Download for 1.21.1 · NeoForge

I don't know my version or loader

Open the Minecraft launcher and look at the profile you play on — it names both, like fabric-loader-1.21.4. The version also shows in the bottom-right corner of the game's main menu.

No loader in the profile name? Then it's plain Minecraft, and these mods won't run — you need Fabric or NeoForge installed first.

Open in MC Java Mods Get it on Google Play →

Mekanism: Tiered Outlines (MTO) — screenshot 1

Mekanism Tiered Outlines

This is a simple mod which adds tiered outlines similar to GT Modern, but for Mekanism! It adds outlines for pipes, tanks, bins, factories, energy cubes, and any tiered machine in mekanism that correspond to the color of their progression tier, like "Ultimate" is purple! (shown in image below)

This allows you to differentiate machines at a quick glance and it looks pretty good too.

Developed by Iristhepianist/Irislgtm!

MIT License, decompile it, do whatever i don't care.

It is able to use the rgb from mekanism tier directly using tier.getRgb(). You can also configure it to be more or less opaque depending on what you want.

If you want to request any features, commenting on CF is probably the best way.

(Ultimate Machine shown below)

Mekanism: Tiered Outlines (MTO) — Minecraft Java mod, screenshot 1

Quick facts

Edition: Minecraft Java
File type: .jar
Minecraft versions listed: 1.21.1, 1.20.1
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 CurseForge — 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 mto-1.1-forge-1.20.1.jar — drop this file into the mods folder
Download size: 13 KB
Download link checked 3 Oct 2026 — working

These come from our own check of the pack file, not from the source page.

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