Cheat Menu:
To enter the cheat menu, first go to the main menu and highlight the Options selection. Before you select it, hold L + R + Z + C-Up + C-Right and a Cheats selection will appear at the bottom of the screen. Select it to enter the Cheat Menu. Below are codes that can be entered in the Cheat Menu.

All Parts:
Hold L + R and press Z. Release these buttons and then press C-Down, C-Up, C-Left, and C-Right. Now hold L + R and press Z.

Invincibility:
Press C-Right, L, R, R, L. Then hold C-Left + C-Down and press Z.

Retro Track:
Earn 100,000 points and unlock Retro track.

Get Oasis Track For Stunt Mode:
All you have to do to get the Oasis track is to collect 250,000 points in stunt mode.

Get Warehouse For Stunt Mode:
Just get 500,000 points.

Get Obstacle Course For Stunt Mode:
This might take a couple days to do. Get 1,000,000 points.

Super Tires:
Press Z, Z, Z, L, R, C-up, C-up, C-left, C-right, C-down.

Car Mines:
Press and hold L and R then tap Z. Press and hold C-Lleft and C-Down then tap Z. Press and hold C-Left and C-Up then tapZz. Press and hold C-Up and C-Right then tap Z.

Heavy Car:
Hold R and Down-C, Then L and Up-C, then R and Left-C, and finally L and Right-C.

Battle Paint Shop:
Quickly press Z, Z, Z, Down-C, Down-C, Down-C, Left C, Left C, Left C, Right C, Top C, Left C and Down-C.

All Cars:
Press Left-C, Left-C, Left-C, Up-C, Up-C, Up-C, Right-C, Right-C, Right-C, Down-C, Down-C, Down-C, then hold L, R, Up-C, Left-C, Down-C, and Right-C and tap Z.

Multicolored Fog:
Hold Up-C and Right-C and press L. Release and then hold Down-C and Left-C and press R. Release And Then Press Right-C, Left-C, Right-C and then Left-C.

Invisible Track:
Press Right-C twice, then hold L, R and Left-C. Release and press Left-C Twice, then hold L, R and Right.

Brakes:
At the Cheat Menu, highlight Brakes and press C-Right, C-Right. Hold L+R buttons and press C-Up. Press C-Up, C-Up. Hold L + R buttons and press C-Down.

Hints

All Tracks:
Press and hold L and R and then tapthe following set of buttons while holding those 2:
1. Z,Cup,and,C-right. *
2. Z,C-Down and C-left. *
3. Z,C-left and C-Up*
4. Z,C-down and C-Right*
*= all the buttons at the same time

All-Terrain Tires:
To unlock the All-Terrain tires finish a few races in the beginner circut.

Track #5:
To unlock Track number 5 Finish in first place in the beginer circut. You will also unlock the intermediate circuit.

L.T. Alloy Frame:
To unlock the L.T. Alloy Frame finish a few races in the intermediate circuit.

GameShark Codes

Have All Coins
500060600000
8113a110ffff
 
Start On Final Lap / Always 1st
d014aa380000
8014aa380002
801529060000  

Lots Of Stunt Points
811520500010  

Max Score
8115204ceoff
8115204e05f5
  

Thanks to Revolution readers mitch, rm_racer, Walter Alliott, cheatmaster99, jahir funes, Harrison Huff, IceMan381, badboy, Hot_Salmon, Thomas Taylor and Speedy!