SuperCross Circuit
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Big helmets
Enter "BIG_HELMETS" as a code to unlock a "Big Helmets" selection on the bonus game options screen.
Headless riders
Enter "SLEEPYHOLLOW" as a code to unlock the "Headless Riders" selection on the bonus game options screen.
Invisible bikes
Enter "FLOATING" as a code.