The following are known GameShark Codes for Ready 2 Rumble Boxing: Round 2 on Sony Playstation 2 (PS2).

• Master Code – Must Be On
  EC87F5201456E60A
• Player 1: Infinite Health
  4C896BC81456E781
• Player 1: Quick Recovery
  4C896BCC1456E781
• Player 2: Infinite Health
  4C8A92381456E781
• Player 2: Quick Recovery
  4C8A923C1456E781
• Player 1: 1-Hit K.O.
  4C896BC81456E7A6
• Player 1: No Stamina
  4C896BCC1456E7A5
• Player 2: 1-Hit K.O.
  4C8A92381456E7A6
• Player 2: No Stamina
  4C8A923C1456E7A5
• All Characters Unlocked
  4C8940341456E7A8
  4C8940381456E7A8
  4C89403C1456E7A8
  4C8940401456E7A8
  4C8940441456E7A8
  4C8940481456E7A8
  4C89404C1456E7A8
  4C8940501456E7A8
  4C8940541456E7A8
  4C8940581456E7A8
  4C89405C1456E7A8
• Have Max Cash
  4C8C0C001456B00C
• Have Max Strength
  4C8C0C0214562B8F
• Have Max Stamina
  4C8C0C0614562B8F
• Have Max Endurance
  4C8C0C0A14562B8F
• Have Max Dexterity
  4C8C0C0E14562B8F
• Have Max Experience
  4C8C0C1214562B8F