At the rider selection screen in pro quest mode, press Down(2), Left, Right, Up(2), Circle to unlock Slim Jim. Alternately, successfully complete the game with any rider to unlock a bonus bike and Slim Jim.
Successfully complete the game with Dave Mirra, Ryan Nyquist, Joey Garcia, Troy McMurray, Mike Laird, Chad Kagy, Tim Mirra, Kenan Harkin, Shaun Butler, and Leigh Ramsdell to unlock Amish Boy.
At the level selection screen in pro quest mode, press Left, Up, Right, Down, Left, Down, Right, Up, Left, Circle to unlock all levels.
At the bike selection screen in pro quest mode, press Up, Left, Up, Down, Up, Right, Left, Right, Circle to unlock all bikes. Note: Each time a new bike is selected this code will have to be re-entered.
At the style selection screen in pro quest mode, press Left, Up, Right, Down, Left, Down, Right, Up, Left, Circle to unlock all styles. Note: Each time a new bike is selected this code will have to be re-entered.
Successfully complete the game with Leigh Ramsdell to unlock the big crash option at the cheat screen.
Successfully complete the game with Kenan Harkin to unlock the sticky crash option at the cheat screen.
Successfully complete the game with Tim Mirra to unlock the silly grunt option at the cheat screen.
Successfully complete the game with Mike Laird to unlock the first person view option at the cheat screen.
Successfully complete the game with Joey Garcia to unlock the ghost rider option at the cheat screen.
Successfully complete the game with Troy McMurray to unlock the exorcist option at the cheat screen.
Successfully complete the game with Chad Kagy to unlock the bike suspension option at the cheat screen.
Successfully complete the game with Shaun Butler to unlock the night vision option at the cheat screen.
Successfully complete the game with Dave Mirra.
Successfully complete the game with Ryan Nyquist.
Successfully complete the game with Slim Jim.
Successfully complete the game with Amish Boy.
Just before the timer reaches zero, press X and bunnyhop while not on a ramp. Hold Up + X or Down + X to continue to get points even though time has expired.