How to Remove the Speed Limiter on an Electric Bike (Read This First)
De-restricting an e-bike is possible, but it usually makes it a moped in law, voids your warranty and insurance, and can get the bike seized. Here is what actually happens.
Plenty of riders search for how to remove the speed limiter on an electric bike. Before you do anything, it is worth understanding what removing it actually changes, because in most places it stops being a legal bicycle the moment you do.
The short answer: De-restricting an e-bike is technically possible on some models, but it almost always reclassifies the bike as a moped or motor vehicle in law. That means you can lose your warranty, void your insurance, break the law on public roads and paths, and in some countries have the bike seized. This guide explains the limiter, the risks, and the legal picture rather than giving step-by-step instructions.
What a Speed Limiter Is and Why E-bikes Have One
An e-bike speed limiter is built into the motor controller. It cuts the motor’s assistance once you reach a set speed. You can still pedal faster than that under your own power, but the motor stops helping.
The limit is not arbitrary. It is the legal line that keeps the bike classed as a bicycle rather than a motor vehicle:
| Region | Assist cuts off at | Class notes |
|---|---|---|
| United States | 20 mph (Class 1 & 2), 28 mph (Class 3) | Set by the 3-class system, varies by state |
| UK | 15.5 mph (25 km/h) | Above this it is not an EAPC |
| EU | 15.5 mph (25 km/h) | Above this it is an L1e-A moped |
| Australia | 15.5 mph (25 km/h) | 250W pedal-assist limit |
Below the limit and within the power rules, your e-bike is treated like a normal bicycle: no licence, no registration, no insurance. Remove the limiter and that changes.
Why Removing It Is a Bigger Deal Than It Sounds
The methods people mention online range from a setting in the display’s menu, to a small aftermarket “tuning” dongle, to rewiring a speed sensor. On many modern bikes the controller is fully digital and cannot be changed this way at all. But the technical how-to is not the real issue. The consequences are.
It reclassifies the bike in law. Once an e-bike assists past the legal limit, most jurisdictions no longer treat it as a bicycle. It becomes a moped or motor vehicle, which legally requires registration, a licence, insurance, and often a motorcycle-standard helmet. Riding a de-restricted e-bike on a road, cycle path, or bike lane can be illegal even if the bike looks unchanged.
It voids your warranty. Controllers log the top speed the bike has reached. If the motor, battery, or drivetrain fails, the manufacturer can see the bike was run past its limit and decline the claim. De-restricting is one of the fastest ways to lose warranty cover.
It can void your insurance. If you have e-bike or home insurance covering the bike, tampering with the limiter can invalidate it. Worse, if you are in a collision on a de-restricted bike, a liability claim, yours or the other party’s, may be denied because you were riding an illegal, uninsured motor vehicle.
It affects safety. E-bikes are designed as a system: the brakes, tyres, frame, and wheels are specified for the bike’s legal assisted speed. Pushing motor assistance well beyond that puts more load on components that were not rated for it, and reduces your stopping margin.
It can get the bike seized. In the UK and parts of the EU, police can and do stop, seize, and destroy illegally de-restricted e-bikes, and riders can face fines.
The Honest Takeaway
If you want to go faster with motor assistance, the legal route is to buy a bike built for it, a Class 3 e-bike in the US (28 mph assist), a speed pedelec / L1e-A in the UK and EU (which is legally a moped and comes with licence, registration, and insurance requirements), or an off-road-only bike you never ride on public land. Our electric bike guides and tools go through how those classes compare. Modifying a standard e-bike to do the same thing gives you the speed without any of the legal cover, and takes on all of the risk.
If your goal is simply more range or a snappier ride within the law, that is a different and much safer project, and the place to start is estimating how far a charge will actually take you. See how fast electric bicycles go and whether you need a licence for an electric bicycle.
E-bike Speed Limiter FAQs
In most places, riding a de-restricted e-bike on public roads or paths is illegal. Once the motor assists past the legal limit, the bike is usually reclassified as a moped or motor vehicle, which needs registration, a licence, and insurance. What is legal on private land can be illegal the moment you ride it in public.
Almost always. Motor controllers record the top speed the bike has reached, so a manufacturer can see the bike was de-restricted and refuse warranty claims on the motor, battery, or drivetrain.
Usually not. Tampering with the limiter can invalidate e-bike or home insurance, and a liability claim after a crash may be denied because the bike is legally an unregistered, uninsured motor vehicle.
Yes, in the UK and parts of the EU police can stop, seize, and even destroy an illegally de-restricted e-bike, and riders can be fined. Enforcement varies by country and state.
Buy a bike built for higher assisted speed: a Class 3 e-bike in the US (28 mph assist) or a speed pedelec in the UK and EU, which is legally a moped and comes with licence, registration, and insurance requirements. That gives you the speed with the legal cover in place.
Summary
Removing an e-bike’s speed limiter is technically possible on some models, but it typically turns a legal bicycle into a moped in the eyes of the law. That reclassification voids warranties, can void insurance, exposes you to fines and seizure, and pushes components past what they were rated for. If you want more assisted speed, the safe and legal route is a bike designed and registered for it, not a modified standard e-bike.
Sources
- Heybike: Can You Remove the Speed Limiter on an Electric Bike?
- Urtopia: How to Remove Speed Limiter on Electric Bike Legally?