At the Main Menu, choose Options and then select Cheat Codes. Enter the code PIKARIDE and you will unlock all the bikes available in this game.

Select "Options" from the main menu, then select "Cheat Codes" and enter the code " L O T A C R A P" to unlock all charactera, levels, bikes, and videos

LOTACRAP - Unlock Everything
MAXSTATS - Max Everyone's Stats
DMCDMAN - Dennis McCoy's Stats
PIKARIDE - All Bikes
BONEGUY - Unlock Bobby Bones
FLYAWAY - Unlock Bird Brains
BADGIRL - Unlock Hotty Babe
SIGMAN - Unlock Angus Sigmund
OLDLADY - Unlock Ramp Granny
OILSPILL - Unlock Oil Refinery
CHOOCHOO - Unlock Train Depot
ARTRIDER - Unlock Museum District
ARTCOMP - Unlock Museum District Competition
FUZYDIRT - Unlock Fuzzy's Yard
VOLCANO - Unlock Mount Magma
PAVEMENT - Unlock Gravity Games Street
GGFLYER - Unlock Gravity Games Vert
MUDPUDLE - Unlock Gravity Games Dirt
ANDFMV - Unlock Andre Ellison Movie
DMCFMV - Unlock Dennis McCoy Movie
JAMFMV - Unlock Jamie Bestwick Movie
LEIFMV - Unlock Leigh Ramsdell Movie
MATFMV - Unlock MAt Berringer Movie
REUFMV - Unlock Reuel Erikson Movie
FUZFMV - Unlock Fuzzy Hall Movie

Note: Enter all codes at the "Cheat Screen" in the "Options" menu.