E-Bike Classes Explained

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The class of an e-bike is not a marketing tier. It is a legal category that decides where you are allowed to ride, whether you need a helmet, and whether there is a minimum age. Buy the wrong one and the bike is fine, the law is fine, and you can’t use it on the path you bought it for.

There are two separate rules stacked on top of each other and almost every article on this subject blurs them, so let’s take them apart properly. We’ve read and linked the actual statutes — not another site’s summary of them.

Rule one: the federal definition (what can be sold as a bicycle)

15 U.S.C. § 2085 defines a low-speed electric bicycle as, quoting the statute:

“a two- or three-wheeled vehicle with fully operable pedals and an electric motor of less than 750 watts (1 h.p.), whose maximum speed on a paved level surface, when powered solely by such a motor while ridden by an operator who weighs 170 pounds, is less than 20 mph.”

Read that carefully, because three details in it do a lot of work. The 20 mph test is on the motor alone— pedalling faster than 20 mph doesn’t break it. It’s measured with a 170-pound rider on level ground, which is a laboratory condition, not your commute. And it’s a product-safety definition: it governs what may be sold as a bicycle under the Consumer Product Safety Act. It does not tell you where you can ride.

Rule two: the state class system (where you can ride)

That’s state law, and most states use a three-class framework. California’s version, Vehicle Code § 312.5, is the model most other states copied, and it defines an electric bicycle as “a bicycle equipped with fully operable pedals and an electric motor that does not exceed 750 watts of power”, then splits it three ways:

Class 1is low-speed pedal-assisted: the motor helps only while you’re pedalling and stops helping at 20 mph. Class 2 is low-speed throttle-assisted: the motor can propel the bike without pedalling at all, and also stops at 20 mph. Class 3 is speed pedal-assisted: help only while pedalling, up to 28 mph, and California additionally requires a speedometer.

Notice what separates Class 1 from Class 2: not speed — the throttle.They cut out at the same 20 mph. The distinction is whether the machine will move without your legs, and that’s the distinction trail systems care about. The statute also permits classes 1 and 3 to include a walk-assist mode that propels the bike at up to 3.7 mph, which is the sensible carve-out for pushing a heavy bike up a ramp.

The label nobody on Amazon is printing

Here is the detail that turns this from a legal explainer into a shopping problem. California has required, since 1 January 2017, that every electric bicycle manufactured or distributed there carry a permanent label stating its classification, its top assisted speed, and its motor wattage.

We read all twelve e-bike listings in our catalogue on 17 July 2026. Not one states a class.Five claim 28 mph. One claims 25 mph. Two claim 19.8 mph, one claims 20 mph, and three don’t publish a speed at all. Zero say “Class 1”, “Class 2” or “Class 3” anywhere in the listing title. The table above has the lot.

We want to be fair about what that does and doesn’t prove. A listing title is not the whole listing, and a bike whose title omits the class may still carry a compliant label on its frame in the box. What it means for you, at the point where you’re deciding what to buy, is that the single legal fact determining where you can ride the thing is not in the information you’re shown.

Why we can’t even guess the class for you

This is the part that surprised us. To place an e-bike in a class you need two facts: does it have a throttle, and at what speed does assistance cut out. The Amazon listings give us, at best, a fragment of the second one — a “top speed”, which is not the same as an assist cutoff — and none of them says a word about a throttle. Zero out of twelve.

So a bike claiming “28MPH” could be a Class 3 pedal-assist bike, or it could be a machine with a throttle that isn’t any of the three classes at all — because a throttle that works above 20 mph doesn’t fit Class 2 (capped at 20) or Class 3 (no throttle propulsion). We’re not accusing anyone of selling an unclassifiable vehicle. We’re telling you that the published information does not let anyone determine the class, including us, and that every site confidently labelling these bikes “Class 2” is telling you something it cannot know from the same evidence we have.

What we haven’t done: read fifty state codes

Most US states use the three-class system; some don’t; the details of helmet rules, age limits and path access vary by state and often by city and by individual trail. We have read the federal statute and California’s, because those are the two documents this page quotes. We have not read all fifty and we’re not going to summarise laws we haven’t opened.

PeopleForBikes — the industry coalition that developed the three-class framework in the first place — maintains a per-state directory of e-bike laws, with a document for each state. Its own summary of the situation is the honest one: e-bike laws are different in every state and can be confusing for riders, retailers and suppliers. Go and read your own state’s page before you buy 28 mph, and then check your actual route — a state can permit Class 3 while the specific trail you have in mind doesn’t.