What Are Missouri Motorcycle Inspection Requirements?

Missouri motorcycle inspection requirements call for a safety inspection every two years at an authorized station, with the year you are due tied to your model year: even-year models are inspected in even calendar years, odd-year models in odd calendar years.¹ The fee is capped at $10, several categories of motorcycle are exempt, and a passing certificate is required whenever you register or transfer a title.

When Your Motorcycle Is Due

The biennial schedule is straightforward once you know your model year. A 2018 motorcycle comes in during 2026, 2028, and so on. A 2019 model comes in during 2027 and 2029.¹

Three events pull you out of that regular cycle and require an inspection right away:

Moving to Missouri. New residents need a safety inspection no more than 60 days old before completing their initial title and registration with the Department of Revenue.²
Buying a used motorcycle. Any title transfer to a new owner triggers a fresh inspection, even if the previous owner just had one done.²
Rebuilt salvage. A motorcycle previously declared salvage and rebuilt cannot be re-registered until it passes a new safety inspection, regardless of age.¹

Motorcycles That Are Exempt

Newer, lower-mileage motorcycles skip the biennial inspection entirely. The exemption covers any motorcycle within ten years of its model year of manufacture that also has fewer than 150,000 miles on the odometer.¹ A 2020 model with fewer than 150,000 miles is exempt through 2030. Cross either threshold and the bike joins the regular rotation.

Motorcycles registered with historic license plates under RSMo 301.131 are also exempt from the biennial inspection.¹ Historic plates carry their own usage restrictions, so they aren’t a shortcut for daily riders.³

What the Inspector Checks

The motorcycle-specific inspection follows 11 CSR 50-2.330. Each system has defined pass/fail criteria, so knowing what will be checked helps you catch problems before you pay for the trip.

Brakes. Each brake control is tested separately with the motorcycle in motion, held under moderate force for one minute, with hydraulic systems checked for leaks. No stopping action, loss of pedal height, or fluid at the wheel or master cylinder means rejection.⁴
Lighting. Headlamp high and low beams, tail lamp, and reflectors must work. If the bike is equipped with turn signals and a brake light, those must function too.⁴
Steering. Frame, fork, steering head bearings, handlebars, and wheel tracking are inspected. Loose bearings, a bent fork, or misaligned wheels fail.⁴
Tires and wheels. Tread design must be visible across at least half the tread width at every point. Exposed cord, bulges, or knots are grounds for rejection.⁴
Horn. It has to work and be audible under normal conditions.⁴
Exhaust. The muffler and pipe are checked for holes, loose joints, and leaking seams, and all mounting hardware must be secure.⁴
Fuel system. No leaks, the tank must be securely mounted, and the filler cap must be present and fit properly.⁴

Glazing and air pollution control devices are also part of the checklist. Rearview mirrors are not part of the motorcycle inspection under 11 CSR 50-2.330, but Missouri law separately requires mirrors on any vehicle where the operator cannot see the road behind them, so you still need them to ride legally.⁵

Cost and Where to Go

The motorcycle inspection fee is capped at $10, lower than the $12 cap for cars and trucks.⁶ Stations can charge less, but not more.

Authorized stations display a large yellow sign with black lettering. The Missouri State Highway Patrol maintains an online station locator you can search by area.⁷ Call before you go. Not every authorized station has a mechanic certified to inspect motorcycles, and the Patrol specifically recommends confirming that the station can handle your vehicle type.

If Your Motorcycle Fails

The station issues a rejection notice listing the components that did not pass. You have 20 business days, excluding weekends and state holidays, to make the repairs and bring the bike back. Return within that window and the re-inspection is free; the station can only re-check the items originally rejected.⁸

If the station is going to do the repair work itself, it must give you a written estimate of the total cost before starting.⁸ You are not required to have them do the work. Take the rejection notice to any mechanic you trust, get the repairs done, and return to the original station with the notice for your free re-inspection. Miss the 20-business-day window and you pay for a full new inspection.

Using the Certificate to Register

A passing inspection generates a certificate of approval that stays valid for 60 days. Submit it to the Department of Revenue within that window when applying for registration or transferring a title.⁹ Let it lapse and you will need another inspection at your own expense.

What About Emissions

Riders in the St. Louis and Kansas City metros do not need an emissions test. Motorcycles, motortricycles, and autocycles are exempt from Missouri’s emissions inspection requirement no matter where in the state you live.¹⁰ The safety inspection is the only one that applies.

Penalties for Riding Without a Valid Inspection

Operating a motorcycle without a current safety inspection when one is required is a misdemeanor in Missouri.¹¹ Beyond the citation, you cannot register or renew plates without a valid certificate, which keeps the bike off public roads. The simplest way to stay clear of both problems is to remember whether your model year is even or odd and get in during the matching calendar year.

1
Missouri Revisor of Statutes. Missouri Code 307.350 – Motor Vehicles, Biennial Inspection Required, Exceptions
2
Missouri Department of Revenue. Motor Vehicle Titling and Registration
3
Missouri Revisor of Statutes. Missouri Code 301.131 – Historic Motor Vehicles, Permanent Registration, Fee
4
Missouri Secretary of State. 11 CSR 50-2.330 – Motorcycle Inspection
5
Missouri Revisor of Statutes. Missouri Code 307.170 – Motor Vehicles, Equipment Requirements
6
Missouri State Highway Patrol. Motor Vehicle Inspection FAQs
7
Missouri State Highway Patrol. MVI Stations Search Locations
8
Missouri State Highway Patrol. Motor Vehicle Safety Inspection Regulations Manual
9
Missouri Revisor of Statutes. Missouri Code 307.355 – Current Inspection Required for Registration or Transfer
10
Missouri Department of Revenue. Motor Vehicle – Additional Help Resources
11
Missouri Revisor of Statutes. Missouri Code 307.390 – Violation, Penalty