Game Platforms

Jeremy McGrath's Supercross World

GameCube

Infinite turbo

At the main menu, press Down(3), L, R, Z. If you entered the code correctly, there will be a quick flash indicator in the bottom left-hand corner of the screen.

Low gravity

At the main menu, press Left, Right, Up, Down, B(3). If you entered the code correctly, there will be a quick flash indicator in the bottom left-hand corner of the screen.

All bikes

Successfully complete the hardcore part of career mode to unlock all bikes.