The following are known GameShark Codes for Kickboxing on Sony Playstation (PS1).
These codes were also known as Action Replay Codes and in most cases will work on both devices.

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

• Infinite Time
  800F73D0 0180
• Player 1: Infinite Health
  801FEBD0 0AF0
• Player 1: No Health
  801FEBD0 0000
• Player 2: Infinite Health
  801FEC10 0AF0
• Player 2: No Health
  801FEC10 0000