Start a tour game (Cheats won't work in practice mode!)
Type in hedgehog as your name, but don't hit <Enter>. (If you do this right, you'll hear a bike rev up)
Hit the <backspace> key until you erase the word hedgehog
Type in NOGAS to give yourself unlimited gasoline.
If you'd like to use the 1956 KHK classic bike, backspace to the beginning again and type CLASSIC.
When done, backspace again, enter your racer's name, press <Enter>, and then start the game.
Gameplay Hints
To unlock the 1956 KHK Classic bike without cheating, you must win the race in EVERY state and also in Sturgis City. This can only be accomplished in a Tour Race, not in a practice race.
Whenever you get too far from the track or if you fall into a chasm that you can't get out of, simply press the R key on your keyboard to instantly return to the track.
Sometimes, handling is more important than a powerful engine. Try choosing a bike with good handling, and upgrade to "grippier" tires at the bike shop.
You may find that fewer fuel stops will get you farther faster than top speeds and quick acceleration.
Try hitting the brakes hard but quickly just before turning into corners. This will slow you down and allow you to corner without going off the road.
