> Motorcross star is abducted against his will.
> His abductors give him the power of a cyborg-insect.
> After initially fighting for them, he rebels and fights against them.
Was Dunbine Tomino's attempting a Kamen Rider series?
No, motocross was just really cool back in the day. If you wanted someone to come off as a sporty type of person, motocross or auto racing was an easy shorthand for that.