All bonuses:

Enter WORLD CHAMP
as a code.

All bikes:

Enter FUNKY MOPEDS
as a code.

All collection book items:

Enter GOODIES
as a code.

All helmets:

Enter BONE DOME
as a code.

All leathers:

Enter GRAVEL RASH
as a code.All wheels:

Enter HOOPS
as a code.

Most events and full TT course:

Enter SPEEDFREAKS
as a code. Note: This willnot unlock the Mad Sunday events.

Mad Sunday events:

Enter WINGS
as a code.

Auto-pilot:

Enter AUTO PILOT
as a code. Press R3
during a race to activate it.

Boost in all events:

Enter BOOST
as a code. Press L3
duringa race to activate it.

Mega-boost in all events:

Enter ENERGY
as a code. Press R3
duringa race to activate it.

Hint: Full nitro:

During a Mad Sunday event, hold L2
+ R2
X
to smoke the tire. Then, release R2
+ L2
,press Left
or Right
then press L3
to activatethe nitro. This will give you full nitro quicker than riding thecourse.