Super Agility

Press Down, Circle, Left, L1, Left, Right, Left, Right.

Rocket Racer

Press Triangle, Up, Up, L2, L2, Up, Up, Up.

Infinite Turbos

Press Triangle, Circle, Right, R2, R2, Up, Square, Up, Triangle.

Double Stunt Points

Press Right, Up, Circle, L2, Triangle, Circle, R1, R2.

Air Brakes

Press R1, R2, Right, L2, Up, Circle, Up, Circle.

Ice Racing

Press Up, R2, R1, Right, L1, Square, Right, Right.

Show-off Cameras

Press Triangle, Down, Square, Triangle, L1, L1, R1, R1.

Play Two-Player mode with other bikes

Press Circle, Square, R2, Circle, Triangle, L2, Right, and Up.