Activate the following cheats by entering the corresponding codes at "Main Menu" > "Extras" > "Cheats" > "Enter Cheat".

CHEAT FUNCTION - CHEAT CODE
All Cars in Construction Mode - RANDARLUV
All Cheats - KUNGFOOPETE
All Items in Construction Mode - NOBLEMAN
All Graphics Modes(click left analog-stick to switch modes) - GFXMODES
All Props and Vehicles(stunt creator) - COOLPROP
Faster Game Speed - OVERCRANK
Freaky Fast Cheat - SLINGPOO
Ice Wheels - ICEAGE
MVX Spartan - FASTRIDE
Nitro Addiction Cheat - THEDUKE
Slow-Mo Cool & Thrill Cam - HOLLYWOOD
Touchable - IMTAREX
Track & Ice Arena in Construction Mode - STEELEJUSTIN
Unknown Code - MCKNIGHTMARE
Unknown Code - GIVEMEREPLAY
Vision Switcher - WEAREFROZEN