Can You Remove the Speed Limiter on an Electric Bike?

Electric bikes are designed to provide riders with extra power while remaining safe and legal to ride on public roads. One feature that helps control an e-bike’s top assisted speed is the speed limiter. This system prevents the motor from continuing to support the rider once a certain speed is reached. 

Because of this restriction, some riders look for ways to disable the speed limiter on their electric bikes. They may want more speed during commutes, better performance on the road, or simply more control over the bike’s power output. However, modifying an e-bike is not always simple. 

Removing or changing an electric bike speed limiter usually involves technical modifications and can also create legal and safety concerns. In some regions, a modified e-bike may even be classified as a motor vehicle rather than a bicycle.

What Is a Speed Limiter on an Electric Bike?

A speed limiter is a built-in system that determines the maximum speed at which an electric bike’s motor will continue to assist the rider. Once the bike reaches a certain speed, the motor gradually reduces power or stops assisting altogether. This system is controlled by the bike’s controller, the small onboard computer that manages the motor, battery, and sensors.

The controller receives information about how fast the wheels are rotating. When the bike reaches the preset speed limit, the controller reduces or cuts motor assistance. Manufacturers install speed limiters for several reasons:

• To comply with government regulations
• To improve rider safety
• To protect the motor and battery from excessive strain

Software-Based Speed Limiters vs Hardware-Based Speed Limiters

There are generally two types of e-bike speed limiter systems: 

• Software-based limiters are programmed into the bike’s display or controller settings. The speed limit is managed through digital software that controls the motor’s power output.
• Hardware-based limiters rely on physical components, such as speed sensors mounted on the wheel or motor. These sensors send speed data to the controller, which then decides when to reduce assistance.

Why Electric Bikes Have Speed Limits

In most countries and states, electric bikes are regulated by law. These laws set the speed at which an e-bike can continue assisting the rider before it is classified as another type of vehicle. Speed limits help ensure that e-bikes can be used safely on roads, bike lanes, trails, and areas shared with pedestrians and conventional bikes.

If a bike exceeds those limits after the speed limiter is removed, it may no longer be considered an e-bike. In some places, it could instead be classified as a motor vehicle or moped. In many regions, electric bikes are grouped into three main classes:

• Class 1: Pedal-assist only, with motor support up to 20 mph.
• Class 2: Throttle-assisted bikes that can reach 20 mph with motor power.
• Class 3: Pedal-assist bikes that can support speeds up to 28 mph.

Supported Settings and Bypassing a Limit Are Different

A manufacturer-supported setting is not the same as modifying sensors, wiring or firmware to defeat an assistance limit. Check the supported configuration for your exact model and market; a menu option does not by itself establish permission to ride in that mode on a road or trail.

If Assistance Stops Sooner Than Expected

1. Identify the bike model, display and configuration.
2. Check the documented assistance limit and the speed unit displayed.
3. Note whether the issue occurs at a consistent speed or is an intermittent loss of assistance.
4. Record any error code and recent component changes.
5. Use the matching owner manual and contact support if the behavior differs from documented operation.

Do not move a sensor, alter wiring, install a signal-modifying kit or copy another display's parameter values to resolve the issue.

What Changes Can Affect

A change can affect handling, braking demands, component loading, legal classification and warranty terms. The result depends on the specific change and equipment. Do not assume every modification automatically voids all warranty coverage, or that restoring a setting removes every consequence.

Check the Rules for the Place You Ride

Federal consumer-product definitions and state or local riding rules serve different purposes. Motor power, assisted speed, throttle operation and vehicle classification can all matter. Private property does not make every modification suitable or exempt from all rules.

Check current rules with the relevant state, municipality or land manager. Our e-bike class guide explains the common classification terms; it is not a substitute for the rules at a particular location.

Choose Performance Through the Complete Bike

If you need a different supported level of performance, compare complete bicycles designed for that use. Consider braking, handling, load and route access alongside motor power. Keep tires and drivetrain maintained within the manufacturer's instructions rather than trying to obtain speed by exceeding equipment limits.

Frequently Asked Questions

Is it legal to remove an e-bike speed limiter?

There is no universal permission. The vehicle's resulting classification and the rules for its location and use determine what is allowed. Check the exact configuration before making changes.

How fast can a bike go without a limiter?

No single speed applies to all e-bikes. Motor design, gearing, battery, load and conditions differ. This guide does not provide a derestricted-speed guarantee.

Does changing a display setting make my bike road legal?

No. A speed setting alone does not establish compliance with every applicable vehicle definition or access rule.

What if I think the limiter is broken?

Describe the actual symptom and use the model's documented troubleshooting procedure. Intermittent assistance, an incorrect speed reading and a normal assistance cutoff are different issues. Do not bypass components as a test.

Use the Configuration Designed for Your Ride

For model information, use Heybike resources. Compare the current electric bike range at Heybike.