The following are known Action Replay Codes for Cruis’n Velocity on Nintendo Game Boy Advance (GBA).
These codes were also known as GameShark Codes and in most cases will work on both devices.

These codes are for the U.S. version of the game.

Master Code – Must Be On
f7f8669a
ff3403af
4927f80f
e4c5e608

Low Lap Time
91a05b69
3f643aee

1st Place
ae86eb7d
122a8a97

Last Lap
4dbaa44b
ca6d17ac

Infinite Turbos
69c3e131
7de99bd1

Everything is Unlocked
2e62f16f
cb29a201