Freestyle Motocross: McGrath vs. Pastrana Cheats - PlayStation

Winning every freestyle competition
In the freestyle levels, all of your opponents will ride like a normal race. This is freestyle, so only trick points count. Find the biggest set of ramps in the stage and hit them. Turn around and hit them again. Repeat this for a lot of points. You will easily win every freestyle competition.

Winning race levels
In the Race levels, the only real competitor that can hang with you is McGrath or Pastrana. There are two to four shortcuts in each level. Practice to find all of these in each level before you race. When you race, all of your opponents will ride the normal route on the first lap, then only McGrath or Pastrana will take the shortcuts during the second and third laps. By the time that happens, you would have already finished.

Vegas: Big air
In freestyle mode, go to the loop and go up one side of it. The right side works the best. Do not go all the way around the loop. Jump off the side of it and you will get huge air.

Volcano: Shortcut
There is a shortcut in the Volcano level. Go to the left and keep going until you see trees. Go into the first set of trees and you will win the race.