Motorcycle licenses are classified by engine size, and the class you need depends on the bike you want to ride

Most states sort motorcycle licenses into classes based on engine displacement, measured in cubic centimetres (cc). The class determines what size engine you're legally allowed to operate. A Class M or Class A license typically covers all motorcycles, while smaller classes restrict you to bikes under a certain cc threshold. Some states use different naming — Class M1, M2, M3, or straightforward "motorcycle" with restrictions — but the principle is the same: the state wants to know you can handle the machine you're riding.

The reason for this structure is practical. A 50cc scooter and a 1200cc cruiser behave completely differently. They have different braking power, acceleration, weight distribution, and how much physical control they demand. A rider trained only on small bikes may not be ready for a large one, and the law reflects that.

Key Takeaways

  • Most states issue a full Class M license for all motorcycles, but some require you to start with a restricted class based on engine size.
  • Restricted classes typically cap engine size at 50cc, 125cc, or 250cc, depending on your state and age.
  • You can usually upgrade to an unrestricted license by passing a riding test or waiting until you reach a certain age.
  • The class on your license determines what you can legally ride; riding a bike larger than your class permits is a traffic violation.
  • Some states issue separate endorsements for motorcycles, mopeds, and motorized bicycles rather than using a class system.

How states define motorcycle classes

The most common system divides motorcycles into two or three tiers. A full, unrestricted motorcycle license (often called Class M or Class A) lets you ride any motorcycle, regardless of engine size. Some states issue this when ready to anyone who passes the test; others require you to earn it by first holding a restricted license for a set period.

Restricted classes typically fall into these ranges, though the exact thresholds vary by state. A Class M1 or "Motorcycle – Restricted" might cap you at 50cc, meaning you can ride small scooters and mopeds but not larger bikes. A Class M2 or "Motorcycle – Limited" might allow up to 125cc or 250cc. A few states have a third tier at 500cc. The point of the restriction is to give newer riders experience on smaller, more forgiving machines before they move to heavier bikes with more power.

Age often determines which class you can hold. Many states let riders under 18 hold only a restricted license, even if they pass the full test. Once you turn 18 or 21, depending on the state, you can take a test to upgrade to the unrestricted class, or the restriction automatically lifts.

Restricted vs. unrestricted licenses

A restricted motorcycle license is a stepping stone. It proves you can operate a small motorcycle safely, but it doesn't give you permission to ride larger ones. If you're caught riding a 600cc sport bike on a 125cc restriction, you're breaking the law — the officer can cite you for operating a vehicle outside your class, which is separate from any other traffic violation.

The restriction stays on your license until you meet the state's conditions to remove it. Those conditions vary. Some states require you to hold the restricted license for a minimum time — often six months to a year — then pass a riding test on a larger bike. Others let you test up when ready if you're old enough. A few states automatically upgrade you at a certain age without requiring another test.

An unrestricted license gives you the legal right to ride any motorcycle, from a 50cc scooter to a 1500cc touring bike. It doesn't mean you're skilled enough to ride all of them safely — that's on you — but legally, you can. Most riders who plan to own larger bikes eventually will need to upgrade.

What happens if you ride outside your class

Riding a motorcycle larger than your license class permits is a moving violation in every state. The consequences vary, but they typically include a fine, points on your driving record, and possible license suspension. In some states, your insurance may also deny a claim if you were riding outside your licensed class at the time of an accident, leaving you personally liable for damages.

The violation is separate from any other traffic offense. If you're stopped for speeding while riding a bike that exceeds your class, you'll face both charges. If you're in an accident, the fact that you were operating outside your class can be used against you in a civil lawsuit, even if the accident wasn't your fault.

This is why it matters to know what your license actually says. Many riders assume they can ride anything once they have a motorcycle endorsement, but the class restriction is printed right on the license. Check yours before you buy a bike.

How to upgrade from a restricted to unrestricted license

The process depends on your state's rules. Some states require a riding test on a motorcycle that meets or exceeds the minimum cc for the unrestricted class. You'll typically take this test at the same place you took your original motorcycle test — the DMV, a testing facility, or an approved motorcycle school. You'll need to bring a bike that qualifies, which means either owning one or borrowing one from someone who does.

Other states let you upgrade by straightforward waiting until you reach a certain age and paying a fee to update your license. No test required. A few states use a hybrid: you can test early to upgrade when ready, or wait until you're a certain age and the restriction automatically lifts. Check your state's DMV website for the exact path in your state.

If you're upgrading through a test, the riding portion is usually the same as the original motorcycle test — figure-eights, emergency stops, and basic control. You're not being tested on a larger bike specifically; the state just wants to confirm you can still handle a motorcycle. The written test may or may not be required again, depending on the state.

Mopeds and motorized bicycles in the class system

Some states treat mopeds and motorized bicycles as separate from the motorcycle class system entirely. They may issue a "Moped Endorsement" or "Motorized Bicycle Endorsement" instead of a motorcycle class. These vehicles typically have engines under 50cc and are governed by different rules — lower speed limits, sometimes no highway access, and different insurance requirements.

If you want to ride a moped, check whether your state requires a separate endorsement or whether it falls under your motorcycle class. A 50cc moped might be legal under a Class M1 restriction in one state but require its own endorsement in another. The DMV website for your state will clarify this.

Frequently Asked Questions

Can I ride a 250cc bike with a restricted license that caps me at 125cc?

No. Riding outside your licensed class is a traffic violation. You would need to upgrade to an unrestricted license or a higher restricted class first. Check your state's upgrade process — you may be able to test when ready or may need to wait a certain amount of time.

Do I need a different class license for a cruiser versus a sport bike?

No. The class is based only on engine size, not on the type of motorcycle. A 600cc cruiser and a 600cc sport bike both require the same license class. The difference in how they handle is up to you to learn through practice and training.

What if I buy a motorcycle and then realize it's too big for my license class?

You cannot legally ride it until you upgrade your license. You would need to either upgrade through your state's process or not ride the bike. Some riders in this situation take a motorcycle safety course, which can sometimes accelerate the upgrade timeline depending on the state.

Does my motorcycle class restriction carry over if I move to another state?

Your out-of-state license is valid to ride in most states, but the restrictions on it are recognized. If your license says you're restricted to 125cc, you cannot legally ride a larger bike in another state either. When you get a license in your new state, you'll follow that state's rules for class and restrictions.

Can I take a motorcycle safety course to skip the riding test for upgrading?

Some states allow this, but not all. A few states recognize completion of an approved motorcycle safety course as a waiver for the riding test portion of the upgrade. Others require the test regardless. Check your state DMV's website or call to ask whether a safety course can count toward upgrading your class.