All cheats have to be entered at the cheat code screen under the options menu!

Master code:                   LOTACRAP
Maximum stats for all riders:  MAXSTATS
All bikes:                     PIKARIDE
Dennis McCoy's stats:          DMCDMAN
Bobby Bones:                   BONEGUY
Bird Brains:                   FLYAWAY
Hotty Babe:                    BADGIRL
Angus Sigmund:                 SIGMAN
Ramp Granny:                   OLDLADY
Oil Refinery level:            OILSPILL
Train Depot level:             CHOOCHOO
Museum District level:         ARTRIDER
Museum District Competition:   ARTCOMP
Fuzzy's Yard level:            FUZYDIRT
Mount Magma level:             VOLCANO
Gravity Games Street level:    PAVEMENT
Gravity Games Vert level:      GGFLYER
Gravity Games Dirt level:      MUDPUDLE
Andre Ellison's FMV sequence:  ANDFMV
Dennis McCoy's FMV sequence:   DMCFMV
Jamie Bestwick's FMV sequence: JAMFMV
Leigh Ramsdell's FMV sequence: LEIFMV
Mat Berringer's FMV sequence:  MATFMV
Reuel Erikson's FMV sequence:  REUFMV
Fuzzy Hall's FMV sequence:     FUZFMV