Complete Career Mode to unlock the Speed Demon and Trickbot.
Go to main menu then go to options then go to cheats and then type in 2468GOA7 the go enter and you shopuld ahve unlocked everything
Complete Freestyle competitions to unlock this bike.
Race as a Slipknot maggot: 86657457
(the word slipknot backwards, numerical ala phone keypad)or complete Master Supercross.
Enter: 23F7IC5 to be able to view the Slipknot Movie.
Enter JIH345 as a cheat in the options menu.