At the main menu, press Square, Triangle, Left(2), Circle(2), L, R(2), Triangle to unlock all championship races.
All bikes except Fury
At the main menu, select "Options", choose "Player Profile", then select the "Enter Cheat" option. Enter "All Access" as a code to unlock all bikes except for the Fury.
All rider gear
At the main menu, select "Options", choose "Player Profile", then select the "Enter Cheat" option. Enter "Duds" as a code to unlock all rider gear.
All rims
At the main menu, select "Options", choose "Player Profile", then select the "Enter Cheat" option. Enter "Dubs" as a code to unlock all rims.
All exhaust pipes
At the main menu, select "Options", choose "Player Profile", then select the "Enter Cheat" option. Enter "Smog Test" as a code to unlock all exhaust pipes. -From: therealzaeea@yahoo.com
All music videos
At the main menu, select "Options", choose "Player Profile", then select the "Enter Cheat" option. Enter "Billboards" as a code to unlock all music videos.
1,500 credits
At the main menu, select "Options", choose "Player Profile", then select the "Enter Cheat" option. Enter "$moneybags$" as a code.
Training bonus
Successfully complete all courses in training mode with a "Gold" rank to get three Talon ATVs; complete them with a "Silver" rank to get two Talon ATVs; complete them with a "Bronze" rank to get one Talon ATV.
Expert levels
Win a gold cup for a level on the normal difficulty setting to unlock a harder version of that level.