The following are known Action Replay Codes for Mat Hoffman’s Pro BMX 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
f3c53091
d509e3f2
00176cd8
14a783a8

Max Special
832e233d
ed44ad67

Max Score
a9bd01ad
0f0d8021
517a7d14
157af60a

Inf Time
eab9a097
88aa5d4f

Coll 1 Star for 5
0d2fd491
7b36e9a5

1 Let for TRICK
81957210
482ccfa5

MH All Covers
57ef32c6
491f7aff

ME All Covers
5f36606b
6d8f2a33

CN All Covers
9a49dab8
b95ecee5

JK All Covers
b9585ac7
84f04a57

RT All Covers
d8d8b7e0
89d55400

DM All Covers
6df47de9
be4a4ec1

KR All Covers
a9640b22
b5da0e52

ST All Covers
01c0d1c6
a706c2da

MH All Gold
33b6f16d
84bb95a7

ME All Gold
38e7af1a
6ac87066

CN All Gold
a6308b7f
199b73e7

JK All Gold
85f4bf6b
a79f67d2

RT All Gold
a9d3d06c
468da974

DM All Gold
17c145a1
d35bba68

KR All Gold
8dd6c123
6556ea16

ST All Gold
839d2178
4e88f10f