The following are known Action Replay Codes for Ready 2 Rumble Boxing: Round 2 on Sony Playstation 2 (PS2). These codes were also known as GameShark Codes and in most cases will work on both devices.

Device Compatibility: Action Replay & GameShark (Version 1 & 2)

Master Code – Must Be On
EC87F520 1456E60A

Infinite Health P1
4C896BC8 1456E781

Quick Recovery P1
4C896BCC 1456E781

Infinite Health P2
4C8A9238 1456E781

Quick Recovery P2
4C8A923C 1456E781

P1 1 Hit K.O.
4C896BC8 1456E7A6

P1 No Stamina
4C896BCC 1456E7A5

P2 1 Hit K.O.
4C8A9238 1456E7A6

P2 No Stamina
4C8A923C 1456E7A5

All Characters
4C894034 1456E7A8
4C894038 1456E7A8
4C89403C 1456E7A8
4C894040 1456E7A8
4C894044 1456E7A8
4C894048 1456E7A8
4C89404C 1456E7A8
4C894050 1456E7A8
4C894054 1456E7A8
4C894058 1456E7A8
4C89405C 1456E7A8

Have Max Cash
4C8C0C00 1456B00C

Have Max Strength
4C8C0C02 14562B8F

Have Max Stamina
4C8C0C06 14562B8F

Have Max Endurance
4C8C0C0A 14562B8F

Have Max Dexterity
4C8C0C0E 14562B8F

Have Max Experience
4C8C0C12 14562B8F

Start at Championship Bout
0CB7D5F8 1456E7A5
4CB7D5F8 1456E7A0