From the main menu, choose Proquest mode. Now enter these codes on the following
screens for various results. You will hear a soundwhen they are entered
Unlock Slim Jim:
On the select rider screen press Down, Down, Left, Right, Up, Up, Y. You
will hear a sound. Move left untill Slim Jim appears.
On the bike select screen press Up, Left, Up, Down, Up, Right, Left, Right,
On the style screen press Left, Up, Right, Down, Left, Down, Right, Up,
In Pro Quest mode, head to track Selection Screen then press Left, Up, Right,
Down, Left, Down, Right, Up, Left, Y, Y.
Thanks to Revolution readers ROADHOUNDD and Erik Walker !