CTGP has evolved to v1.13 and beyond, but v1.03 holds a special place for three reasons:
Emulator users prefer the WBFS format because it eliminates the need for NAND emulation.
Pro tip: In Dolphin, disable "Dual Core" under Config → Advanced to prevent crashes on custom tracks. ctgp revolution v1.03 wbfs
This is a grey area. The mod itself is legal—it consists of fan-made tracks and scripts. However, the WBFS file contains copyrighted Nintendo code (the base Mario Kart Wii engine). Distributing the pre-patched WBFS is technically copyright infringement.
Most reputable sources will provide patches (e.g., xdelta patches) applied to your own legal backup of Mario Kart Wii. You should only create a CTGP WBFS if you own a physical or digital copy of the original game. This article assumes you are creating the file yourself from a legitimate disc backup. CTGP has evolved to v1
Because CTGP Revolution is a massive modification (over 200 tracks), it is distributed as a custom standalone game image (WBFS), not a simple patch file you apply to a standard Mario Kart Wii ISO.
Prerequisites:
If you have a legal backup of Mario Kart Wii and wish to create a CTGP v1.03 WBFS file yourself: