Game Boy Advance (SP) Codes:  A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

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Master code:  Enter ALAKAZAMM as a password to unlock all characters, all tracks, and all players at level 4.
Level select:  Enter KEEPOUT as a password.
Fat Hoagie:  Enter EDGY as a password.
Fat Hoagie at level 3:  Enter FURIOUS as a password.
Fat Hoagie at level 4:  Enter HEADACHE as a password. Alternately, successfully complete the first six hard mode tracks in wild race mode.
Play as Hurl:  Enter STRIDER as a password. Alternately, successfully complete the first six easy mode tracks in wild race mode.
Ace at level 4:  Enter BRUISE as a password.
Ace at Rain Forest in easy and and hard difficulties:  Enter GREASE as a password.
Hurl at level 4:  Enter BEATNIK as a password.
Lula at level 2:  Enter BLOW as a password.
Lula at level 3:  Enter SCOURGE as a password.
Tiny at level 2:  Enter AXLE as a password.
Tiny at level 4:  Enter WHEEL or PROPER as a password.
Tiny at City in Wild Ride mode under easy difficulty:  Enter TARMAC as a password.
Lulu at level 4:  Enter QUICKEN as a password.
All characters at level 4:  Enter FLUSH as a password.
All tracks:  Enter HAZARD as a password.
All tracks in Cop Patrol mode::  Enter FELONY as a password.
Time attack mode tracks:  Enter EVADE as a password to unlock the next two tracks in time attack mode.
Survival mode:  Enter MENACE as a password.
Unknown:  Enter ABRASIVE as a password.
Unknown:  Enter ASPHALT as a password.
Unknown:  Enter BREAKDOWN as a password.
Unknown:  Enter GEAR as a password.
Unknown:  Enter HOWDY as a password.
Unknown:  Enter NICKED as a password.
Unknown:  Enter OVERTAKE as a password.
Unknown:  Enter PRESSURE as a password.
Unknown:  Enter PULSE as a password.
Unknown:  Enter RIGHTS as a password.
Unknown:  Enter SLAP as a password.
Unknown:  Enter SWING as a password.
Bonus cop patrol tracks:  Successfully complete the first six tracks in cop patrol mode to unlock three bonus tracks in that mode.
Survival mode:  Successfully complete all tracks in time attack mode.
Instant max bike upgrades:  Successfully complete all tracks in survival mode.

Gameshark codes

[M] Must Be On 9FFAE42C886D 5EB24BEB5FA4 B088CBF5AF71
Infinite Cash 100FAF20A663 CC3160C458C6
Place 1st 11036693AFAC
Transparent EF33F87F0386
Infinite Health DDB8D5045749
Infinite Boosts FA63E55F8C95
No Knock Offs FA63E55F8C90
Quick Impact Recovery 32C846D9FC74

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