Missouri Bike Laws: What You Need to Know

DirtLegal explains Missouri dirt bike requirements, including OHM registration, safety rules, and conversion steps for compliant off-road and street riding.
Dirt bike rider on a trail in Missouri’s Ozark forest kicking up dust during autumn.

Disclaimer: The information provided by Dirt Legal is for general informational purposes only and does not constitute legal or financial advice. Please consult your CPA or attorney for guidance on all financial and legal matters.

Off-Road Use: Registration Requirements

In Missouri, dirt bikes are classified as Off-Highway Motorcycles (OHMs) and must be registered with the Missouri Department of Revenue (DOR) to operate on public lands, designated trails, and frozen waters.
  • Registration Requirements:
    • All OHMs must be registered annually with the DOR.
    • The registration period runs from January 1 through December 31. A bill of sale including the year, make, model, and vehicle identification number (VIN) is required when purchasing a used OHM.
    • Nonresident OHMs are not required to register in Missouri if they are not in the state for more than 30 days.
  • Helmet and Eye Protection:
    • Operators and passengers under 16 are required to wear a DOT-approved helmet when operating or riding on an OHM.
    • Eye protection is recommended for all riders, regardless of age
  • Age Restrictions:
    • Operators under 16 must possess a valid OHM safety certificate to operate on public lands or waters.
    • Operators under 12 are prohibited from operating an OHM on public lands or waters unless accompanied by a person 18 years of age or older who holds a valid driver’s license.

Street Use: Converting a Dirt Bike to Street-Legal

Converting a dirt bike to be street-legal in Missouri is possible but involves a detailed process: Install Required Equipment:
  • DOT-approved headlight with high and low beams.
  • Taillight with brake light function.
  • Rearview mirrors (one on each side).
  • Turn signals (front and rear).
  • Horn audible from at least 200 feet.
  • Speedometer and odometer.
  • DOT-approved tires.
  • Muffler to comply with noise regulations.
Inspection and Documentation:
  • Complete a Vehicle Examination Certificate (Form 551), which may require a law enforcement officer’s verification.
  • Provide proof of ownership (e.g., bill of sale or previous title).
  • Submit the completed Form 551 and documentation to the Missouri Department of Revenue.
Registration:
  • Register the bike with the Missouri Department of Revenue as an “Assembled Vehicle.”
  • Pay applicable registration fees.
  • Obtain a Missouri license plate for the bike.
Insurance:
  • Secure liability insurance for the bike.

Where You Can Ride

Off-Road:
  • Private Property: Riding on private property is permitted with the landowner’s consent.
  • Public Lands: Riding on public lands is allowed only in designated areas and trails. Missouri has several OHM trails and parks where off-road riding is permitted.
On-Road:
  • Permitted Roads: Operation of off-road motorcycles on public roads is generally prohibited unless the bike has been converted to meet street-legal requirements and is properly registered and insured.
  • Crossing Roads: Off-road dirt bikes may cross public roads at a 90-degree angle during daylight hours, provided they come to a complete stop and yield to oncoming traffic.


Where You Can Ride

Off-Road:

  • Private Property: Riding on private property is permitted with the landowner’s consent.
  • Public Lands: Riding on public lands is allowed only in designated areas and trails. Missouri has several OHM trails and parks where off-road riding is permitted.
      

On-Road:

  • Permitted Roads: Operation of off-road motorcycles on public roads is generally prohibited unless the bike has been converted to meet street-legal requirements and is properly registered and insured.
  • Crossing Roads: Off-road dirt bikes may cross public roads at a 90-degree angle during daylight hours, provided they come to a complete stop and yield to oncoming traffic.

Rider Requirements

  • License: A valid driver’s license with a motorcycle endorsement is required to operate a street-legal dirt bike on public roads.
  • Helmet Use: Riders under 16 must wear a DOT-approved helmet; helmet use is recommended for all riders.
    Insurance: Liability insurance is mandatory for all street-legal vehicles in Missouri, including dirt bikes.

Penalties for Non-Compliance

Failure to adhere to Missouri’s dirt bike laws can result in:
  

  • Fines: Monetary penalties for unregistered or improperly equipped vehicles.
  • Impoundment: Unauthorized vehicles may be impounded by law enforcement.
  • License Suspension: Operating without a valid license or insurance can lead to suspension of driving privileges.
      
Curving scenic road through Missouri’s Ozark hills lined with trees and rolling terrain.

Relevant Missouri Laws and Agencies

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