Minecraft Java 1.21 Mods
Browse 9 free mods for Minecraft Java 1.21 — popular picks include Cardinal Components API, Track API, Immersive Vehicles Trin Part Pack.
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Cardinal Components API
API for data-driven content
Track API
A compatibility layer for train mods
Immersive Vehicles Trin Part Pack
Trin Part Pack - the full part collection
[FVTM] Fex's Vehicle and Transportation Mod
A vast addon-based mod allowing you to create Vehicles, Containers, Items, Blocks, Food/Drinks, Clothes and more!

Auto TNT Cart
One‑click instant TNT minecart trick: press C to place rail, spawn TNT minecart, and shoot a flame arrow. Requires Fabric API.
Trin Part Pack - custom parts for Immersive Vehicles
Adds many parts, decors, and more, to customize, tune, or improve your Immersive Vehicle cars and trucks from all packs!
Tyr's Minecart Speed Fixes
An overengineered minecart default speed tweaker, with lots of configurable options!
Sable Cars
Adds driveable, physics-simulated cars to Minecraft using the Sable physics engine and GeckoLib for animations.
Create:Custom Train Door
Interactive CR400BF and CRH2A sliding train doors for Create on Minecraft 1.21.1, with ZIP-based custom textures, animations, sounds, and recipes.