Secret Cheat Code
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Cheat Codes > PS One Cheat Codes > TNN MotorSports: HardCore 4x4 > Secret

Secret - TNN MotorSports: HardCore 4x4

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How To: Secret

Enter the "Edit Names" option in time trial mode. Then, enter "MAINLINE" as a name. If you entered the code correctly, a face will appear. Now the Pro and Extreme difficulty levels will be selectable.
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