Complete Career Mode on the Hardcore difficulty.
At the main menu press R2, L1, Square, O(3x). Re-enter the code to disable.
YOU FEEL LIGHTER
At the main menu press Up(4x), R1, Square, O. Re-enter the code to disable.
during gameplay press up down left right x.
At the Main Menu, press R2, L1, Square, Circle, Circle, Circle.
At the Main Menu, press Up, Up, Up, Up, R1, Square, Circle.
At main menu screen press and hold x, then push up,right,down,left,up.
Go to the main screen and hold x, then press o 36 times and hold. While holding o and x press up,down,triangle,down,left,right,up,up,right.
Go to single event and you should have all the hidden bikes. All the bikes and your riders will be 100 percent in stats.