At the main menu, press L1, L1, L2, L2, R2, R2, R1, R1, L1+R1+L2+R2
Always win XG career mode races
Press R2 + L2 + R1 + L1, R2 + L2, R1 + R2, R2 + R1 + L2 + L1 at the main menu. A message will confirm correct code entry. This allows you to win a race no matter if you quit, lose, or die. Note: This must be enabled at the main menu before every race.
Break the sound barrier
Reach a speed of at least 750 mph to break the sound barrier. Enable the "Unlimited shield and turbos" code to make this easier to accomplish.
Double prize money
At the main menu, press L1, L2, R2, R1, R1+R2, L2+L1.
Extreme Lap Challenge
At the main menu, press L1, L2, L1, R1, L1, R2, L1+R1, L2+R2
Infinite ammo
At the main menu, press L2, R2, L1, R1, L2+R2, L1+R1.
Quick start
To get a jump start when you begin a race, hold Forward during the countdown without pressing Gas. As soon as "Go" appears, hit the accelerator.
StarCom team
At the team selection screen, press L2, R2, L1, R1, L2 + R2, L1 + R1. Alternately, successfully complete the game and win every trophy to unlock the Robotic team, StarCom.
Start with extra money
Begin a new career, select a driver, then press L1(5), L2(5), R1(5), R2(5), L1 + R1 + L2 + R2. A message will confirm correct code entry.
Super speed
The first chance you get to do this is in the 1000G League with the 1250 G engine on the Verdegrande course. Enable the "Unlimited shields and turbos" and "Unlimited ammunition and StarCom" codes. to do this trick. Start the race as normal and switch to the rear blasters weapon, then hold the Accelerator, Weapon and Booster. Drive with skill and you can get the speed numbers into yellow. Continue to drive with skill and eventually you will notice that for a brief moment it does not look appear as if you are moving. This indicates you have reached the speed needed. Note: This is the fastest speed in the entire game. When you turn a corner at this speed (if you see it coming since the surroundings will literally be a blur), the game may glitch and your bike will teleport backwards slightly down the track. It is also possible to do this with either the 1250 G or 1500 G engines in the last course. Try using the Palus bike with Epsilon Knight as the pilot. Also, once at this speed, you are invulnerable to minigun, missile, and railgun fire, as you can drive at the same speed as those shots. You can actually drive between minigun bullets and have a group of them surrounding the bike. As for the railgun shot, you may see a blue blur beside your bike for a moment before it vanishes. Missiles are easily outrun. Note: You will do about 60% damage to an enemy craft's shields if you collide at this speed. They other craft will also be propelled forwards, and may explode if it comes into contact with a wall due to the extreme speed and lack of shields.
Unlimited shields
Pause game play and press L1+R1, L2 + R2, L1 + L2, R1 + R2. A message will confirm correct code entry. Repeat the code to return to normal.
Unlimited shields and turbo's
At the main menu, press L1+R1, L2+R2, L1+L2, R1+R2. Start your game, but you will also get unlimited turbos once weapons and boost are activated after start. The code has to be re-entered for each race.
Unlimited turbo
Press L1 + R1, L2 + R2, L1 + R1, L2 + R2 at the main menu. A message will confirm correct code entry.
Win Next Race
At the main menu, press L1+R1+L2+R2, L2+R2, R1+R2, L1+R1+L2+R2