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The world of electric bikes (e-bikes) is expanding, as more people appreciate the blend of manual cycling with an electric boost. With so many options available, a common question arises: How fast can an electric bike go, and what power do you need if you're considering an e-bike conversion kit?

From understanding the classifications of e-bikes to gauging the best power for your needs, this guide will answer your questions and give you a pretty quick and thorough understanding of what you need to know before switching to electric.

When you've finished reading and are ready to get started and join the ebike revolution, be sure to shop for ebike batteries at eBikeling to fuel your next adventure.

Classes of Electric Bikes & Their Maximum Speed

Electric bikes, commonly known as e-bikes, have surged in popularity due to the diverse range of options available. They cater to different riders and purposes and have a lot more to offer than a normal bike does. These bikes are categorized into different classes based on the capabilities of the e-bike's motor, pedal assistance features, and top speeds. As technology and legislation evolve, so too do the definitions and features of these classes.

Here's an in-depth look at these e-bike classifications:

  • Class 1: Known as pedal-assist e-bikes, Class 1 bikes only provide power when you pedal. The electric motor assistance cuts off once you reach 20 mph, ensuring a moderate speed. These e-bikes are popular for city commuting due to their controlled speed and reliance on their own pedal power.
  • Class 2: These e-bikes come with a throttle mechanism, which means you can get power without pedaling, akin to a scooter. Like Class 1, the electric assistance stops at 20 mph. The throttle-assist feature makes them suitable for those looking for both exercise and convenience.
  • Class 3: Termed "speed pedelecs", Class 3 e-bikes offer a higher pedal-assisted speed limit of up to 28 mph. They usually come with more advanced features like advanced displays and might be equipped with better brakes. Their higher speed makes them ideal for long commutes or speedy rides, but they might be subject to stricter regulations.

Factors That Affect the Speed of an Electric Bike

Factors That Affect the Speed of an Electric Bike

Various factors influence the speed of an e-bike. While some are intrinsic, like the motor's power, others are extrinsic, such as the terrain or weather. Let's break down some of the factors affecting the speed of e-bikes.

#1. Motor Wattage

The motor's wattage plays a pivotal role in determining the e-bike's speed. For instance, at eBikeling, the range includes 500W, 1200W, and 1500W conversion kits. A 500W motor provides speeds of around 18-22mph, suitable for short rides. On the other hand, a 1200W motor offers a significant boost, pushing max speed to 25-30mph, making it ideal for hilly terrains. If you crave exhilarating speeds, the 1500W motor propels you at an average of 35mph.

#2. Weight of the Bike

The bike's weight, combined with the rider's weight, can affect the speed. Heavier bikes require more energy to move, possibly decreasing the top speed. It's beneficial to consider both the bike's weight and the anticipated cargo when determining potential speed.

#3. Road Beneath You

The terrain you ride on has a direct impact on your e-bike's speed. Smooth, flat surfaces allow for optimal speeds, while uphill routes can slow you down. It's essential to match the motor's power with the terrain you typically traverse and consider special off-road bikes when needed.

#4. Weather Conditions

Weather can be a friend or foe when it comes to e-bike speeds. Riding against strong winds demands more power, potentially reducing the speed. On the other hand, a tailwind might give you a speedier ride without draining the battery as much.

#5. Local Speed Legislations

While your e-bike might be capable of impressive speeds, it's crucial to be aware of local speed restrictions. Many regions have set legal speed limits on how fast e-bikes can legally travel, especially in urban or crowded areas.

Which Class of E-Bike Should I Choose?


Selecting the right class of e-bike largely depends on your individual needs, your riding environment, and the experience you seek. If you're a city commuter wanting a mix of exercise and a mild speed boost, Class 1 would be ideal. Those looking for more convenience might lean towards Class 2. For speed enthusiasts or those with longer commutes, Class 3 models are the fastest electric bikes that offer a compelling balance of speed and features. Whichever class you choose, ensure it aligns with your goals, local regulations, and safety considerations.


E-bikes offer a seamless blend of manual cycling and electric power, opening up a world of speed, convenience, and sustainability. Understanding the factors that influence e-bike speeds ensures that you make informed choices, whether you're purchasing a new bike or considering an e-bike conversion kit. Remember, the journey is as important as the destination. So, as you explore this world of electric biking, head over to the eBikeling electric bike conversion kit store to find the perfect power source for your next adventure.

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