Master code:
Enter borkbork as a name.

Respect points:
Start a new game and enter .resp followed by a space and a number (for 
example, .resp 30) as a name to begin with the indicated amount of respect. 

Finish all nine driving tests:
Start a new game and enter .test9 as a name. 

Win all six meets:
Start a new game and enter .meet6 as a name. 


GP Mode completed:
Start a new game and enter .prix as a name. 


Best laps:
Start a new game and enter .lapt18 as a name. 


Quick start:
Hold Gas + Skid, then release Skid after the countdown. 


Boost start
To do a boost-start you just hold X and A from where it shows the racers to when 
it says "1" in the count-down.Then let go of X (but continue holding A)and your 
bike will boost forwards.


Get new bikes and levels
To get new levels and bikes you have to beat meets.


Grand prix mode
Go to time attack and beat the best record. 
This will unlock GPM FOR single & mult.


All tracks
Get gold medal on every thing in license.

Tricks: 
Wheelie: Hold the Left Analog-stick Back.
Standing Wheelie: Press Trick + Left Analog-stick Back. 
Surfing Wheelie: Press Trick + Kick/Punch + Left Analog-stick Back.
Endo: Press Left Analog-stick Forward + Front Brake. 
Surfing Powerdown: Press Trick + Left Analog-stick Forward + Power Down.
Surfing: Press Trick + Left Analog-stick Forward, then Left Analog-stick Back.
Handstand: Press Trick + Left Analog-stick Forward, then Kick/Punch
Pavement Ride: Trick + Left Analog-stick Forward, then Skid.
Donut: Hold Brake + Gas and turn in one direction with the Left Analog-stick. 
Handstand Powerdown: 
Press Trick + Skid + Left Analog-stick Forward + Power Down.
Cross Surfing Wheelie: 
Press Trick + Left Analog-stick Back + Front Brake + Kick/Punch.