If you're one of the thousands of people that still despairs that the arcade version of F-Zero GX — cunningly titled F-Zero AX — was really hard to find in its heyday, and has since all but died out, we've got some good news for you.
The intrepid folks over at The Cutting Room Floor have found that the arcade version was never very far away in the first place, as it was included on the original GameCube disc for F-Zero GX. Originally assumed to be based on entirely different codebases, it seems that even though AX was designed to run on the Triforce arcade board, it seems to do pretty well on your bog-standard GameCube as well.
You'll need a GameCube, an original copy of F-Zero GX, and an Action Replay (or similar) device in order to enter the lengthy code that boots the game up in AX mode. Once you're there, you get access to the classic against-the-clock arcade gameplay, as well as all of the arcade-exclusive tracks.
If you're using a PAL copy of the game, you'll need to enter the following code:-
And for those with NTSC copies, this shorter code will do the job:-
It really is amazing that this has managed to stay hidden for around a decade. The fact that it has goes to prove that it must have been really tricky to find - so a doff of the cap is required for those that found it. Good work!