All Tracks
Select pro-career mode, then enter "WHATEXIT" as a name to unlock all tracks.
Submitted by: Unknown Added: July 24, 2001	Click below if this code: Doesn't work | Should be a hint

All Bikes
Select pro-career mode, then enter "CHACHING" as a name to unlock all bikes.
Submitted by: Unknown Added: July 24, 2001	Click below if this code: Doesn't work | Should be a hint

Expert Mode
Select pro-career mode, then enter "ALLOUTAI" as a name. If you entered the code correctly, the game will return to the name entry screen.
Submitted by: Unknown Added: April 18, 2001	Click below if this code: Doesn't work | Should be a hint

Quick Resume
During a race, press L1 + R1 if you go off-track or crash to quickly resume the race.
Submitted by: Unknown Added: April 18, 2001	Click below if this code: Doesn't work | Should be a hint

Increased Difficulty

In the Pro-career mode, enter "ALLOUTAI" for the name. This will increase the difficulty. I got this code after beating the game the second time (got a 1000cc Quad after the first win).