All challenges
Enter "DOUBLEBARREL" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear.

All tracks
Enter "ROADKILL" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear.

All vehicles
Enter "GENERALLEE" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear.

All riders
Enter "BUBBA" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear.

All tricks
Enter "FIDDLERSELBOW" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear.

Maximum stats
Enter "GINGHAM" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear. Note: This code also increases the computer AI and makes the game much tougher.

Championship
Enter "REDROOSTER" as a rider name under the "Create A New Profile" option. If you entered the code correctly, a message will appear.

Bonus ATVs
Successfully complete the ATV Academy Training and Trick Training to unlock the Dimension and Viper ATVs. Win over eight races in arcade mode to unlock the ATC ATV.