Big Head Mode
At the Main Menu, type Big Heads.
Get Jeremy McGrath's Bike
At the Main Menu, type kcussedocruoy.
New Honda Bike
Enter your name as "HONDAISACE".
Kaboom Of The Cliff
In "Stunt Quarry", "National" or the "Baja" race mode if you get enough speedand hit it right you can climb the huge cliff at the edge of the track. When you get on top you can only go 1/4th of the way to the outside of the cliff. If you go any further you will here and see something so amazing no regular dirtbiker could walk away from.