Suzuki Alstare Extreme Racing Codes -

Full pause screen:
Press Start to pause game play, then press X + Y.

GSX-R600 Racing bike:
Successfully complete Session 1.

GSX-R Supersport bike:
Successfully complete Session 3.

Bonus motorcycles:
Successfully complete GP mode with each ranking to unlock the Anorak, Skitz, Roger Rocket, and Hoverbike.

Hidden artwork:
Place the game disc in a PC compatible CD-ROM drive to find more images from the game.