Enter these on the title screen:
Code Effect Hold L+B and press Left Unlock all cars Hold L+B and press Right Unlock all tracks Hold L+B and press Up Unlock all tune-ups Hold L+B and press Down Unlock Extra Modes
Contributed By: Starky27.
Unlock Expert Championship Mode
To unlock the Expert difficulty for the entire Championship mode, you must first complete the regular Championship mode with Gold on ALL tracks.
Unlock Kart Extra the real way
To unlock the Kart Extra mode normally, simply complete all the tracks of every class in Championship Mode.
Unlock Wire Frame Extra the real way
To unlock the Wire Frame Extra mode normally, complete all the tracks of every class in Championship Mode, on the Expert setting.
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