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EleronMinecraft mod for 1.21.3

A Fabric rewrite of Aileron, an overhaul to Minecraft's Elytra

client and servernewest supported 1.21.3EquipmentGame MechanicsTransportation
Latest version
2.0.0
Minecraft
1.21 to 1.21.3
Java
Java 21+
Loader
Fabric
Licence
LGPL-3.0-only
Downloads
3.3k
Updated
7 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Eleron servers

One click and Eleron is installed with the right loader, on hardware built for it.

  • 1.21.3
  • Fabric
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version Eleron declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.3Fabric21+declared23 Oct 2024
1.21.2Fabric21+declared22 Oct 2024
1.21.1Fabric21+declared8 Aug 2024
1.21Fabric21+declared13 Jun 2024

Download

From Eleron’s own host. Nothing is re-hosted here.

2.0.0release2 Mar 2026

eleron-2.0.0.jar · 45 KB · for 1.21.1, 1.21

Download latest
7ab4177eac6f…
Older versions8
  • 1.2.011 Jan 20251.21.1, 1.2144 KB2.1k downloadsdc6285c3491a…Get
  • 1.1.07 Dec 20241.21.3, 1.21.245 KB165 downloadsdac2b5ab34f9…Get
  • 1.0.130 Nov 20241.21.1, 1.2144 KB349 downloads5d93d948891c…Get
  • 1.0.011 Nov 20241.21.144 KB180 downloads51d0a5064631…Get
  • beta-0.3.211 Nov 20241.21.144 KB85 downloadscd17dcd127ca…Get
  • beta-0.3.18 Nov 20241.21.141 KB101 downloadsf10665605a1f…Get
  • beta-0.2.08 Nov 20241.21.140 KB78 downloadscbc3a8d3d4b8…Get
  • beta-0.1.229 Oct 20241.21.133 KB134 downloadse83432e606f5…Get

Frequently asked

Does Eleron work on Minecraft 1.21.3?

Yes. 1.21.3 is the newest Minecraft version Eleron declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does Eleron support?

Everything the author has declared, from 1.21 up to 1.21.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Eleron on the client or the server?

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does Eleron support?

Fabric. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for Eleron?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the mod itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Eleron under?

LGPL-3.0-only, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install Eleron?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download Eleron safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Details from Modrinth, where the author last updated it on 2 Mar 2026. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .