A street-legal motorcycle must have all of the following, except: Do you currently have motorcycle insurance? Insurance is mandatory to drive in Montana Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question A street-legal motorcycle must have all of the following, except: Answers A headlight. Front brakes. Two mirrors. A windshield wiper. Explanation At minimum, a street-legal motorcycle must have a headlight, taillight, and brake light; front and rear brakes; turn signals; a horn; and two mirrors.