Moto GP 2 Unlockables

Go into options menu and watch the text (not video) credits. Scroll down until you get to the credits for the mini-games. When it appears onscreen, press A. To confirm correct code entry, the screen with the "Mini Games" title will have the "A" in "Games" change to resemble that found on that controller button.

Open Challenges 62 through 66. Challenge 67 will be unlocked as the legends mode.