T. J. Lavin's Ultimate BMX Cheats (GameBoy Color)

Enter the following codes at the Password screen to unlock the corresponding level: 
  2: VBBCWBBBCX9 
  3: LBBBHBBBCX9 
  4: 4BBCRBBBCX+ 
  5: GHBFLBBBCX9 
  6: ZYBBHBCDFX7 
  7: QHBBNBCGYX5 
  8: 8DVDBBCGYX7 
  9: DBBDZBCGYX+ 
  10: XZBFWBCGYX4 
  11: N+BDMBC4YX7

To unlock dirt tracks, go to the password screen and enter this code: 6YBBQBBBCBF. The
dirt tracks will now be available in Practice Mode.