The only 3 Ninjas film without narration from the boys at the beginning and end.
Out of all 4 films of the 3 ninjas franchise, Victor Wong is the only actor to appear in all 4 films.
Elitch Gardens, where the movie was filmed, was completely remodeled for shooting. All of the park and ride signs were changed for the movie. In a few places, the real signs for the rides and park are in the background.