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10 Best Electric Bicycle Conversion Kits 2025 in the United States

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#1

Winner

BAFANG 1000W 500W 750W Mid Drive Kit with Battery(Optional),Bafang BBS02B HD Mid Drive DIY 8Fun Ebike Conversion Kit with LCD Display&Ebike Battery for BB 68-73MM/85-105MM/105-125MM E-Bike

Rating
9.8
Chosen by1,299
Motor Type
Motor Power

Most important from
25 reviews

Motor Type
The kit's throttle feature provides a different feel compared to other pedal-assist motors. 'It's a different feel than the previous Bosch pedal-assist bottom bracket motor, in part due to the throttle feature.'
Motor Power
The BAFANG Mid Drive Kit exceeds expectations, especially for those challenging commutes with steep hills. One user mentioned, 'This motor will pull me up an 18% gradient hill in 4th gear at 12-14 mph.'

The BAFANG Mid Drive Kit is a versatile electric bicycle conversion kit designed to fit a wide range of bikes with bottom brackets measuring 68-73MM, 85-105MM, or 105-125MM. Powered by a 750-watt motor and 48-volt battery, it offers excellent power for tackling hills and extending ride range. One of its standout features is the inclusion of comprehensive accessories, such as a brake lever, chainwheel, thumb throttle, LCD display (optional), speed sensor, headlight, and bottom bracket removal tool, making it a complete package for DIY enthusiasts.

Installation is made relatively easy with basic tools, and numerous instructional videos are available online to guide users through the process, even for those with minimal technical skills. The kit also promotes health benefits and cost savings by providing an efficient and sustainable mode of transportation that still offers a good workout. The customer reviews are generally positive, with a rating of 4.3 out of 5 stars. Potential buyers should be aware that this kit weighs 7 kilograms, which could add significant weight to the bicycle.

The product comes with a 30-day return policy, one-year repair or replacement service, and lifetime technical guidance, ensuring ongoing support for users. The new upgraded system also features smooth, controlled starts and allows speed limitation settings for both pedal assist and throttle modes, enhancing safety and control. The BAFANG Mid Drive Kit is a powerful, user-friendly option for those looking to convert their standard bicycle into an electric one, offering a balance of power, ease of installation, and comprehensive support.

Rating
9.8
Chosen by1,299
Motor Type
Motor Power

Most important from
25 reviews

Motor Type
The kit's throttle feature provides a different feel compared to other pedal-assist motors. 'It's a different feel than the previous Bosch pedal-assist bottom bracket motor, in part due to the throttle feature.'
Motor Power
The BAFANG Mid Drive Kit exceeds expectations, especially for those challenging commutes with steep hills. One user mentioned, 'This motor will pull me up an 18% gradient hill in 4th gear at 12-14 mph.'
#2

Voilamart 26" Waterproof Electric Bicycle Hub Motor Wheel Ebike Conversion Kit 48V 1200W with LCD Display Meter IP65 (Rear Ebike Hub Motor Wheel)

The Voilamart 26" Waterproof Electric Bicycle Hub Motor Wheel Ebike Conversion Kit packs a powerful 48V 1200W brushless rear hub motor, making it an excellent choice for those looking for high-speed and efficient performance. The motor can achieve a top speed of 30mph (49km/h), and it is restricted to 750W and 24mph (38km/h) for road-legal use, which can be easily switched to full power for off-road adventures. This versatility is a key advantage for both casual riders and enthusiasts who seek a bit more thrill. The kit's IP65 waterproof rating ensures durability and reliability in various weather conditions.

It is compatible with any 26-inch bike with a 135mm rear dropout spacing, making it a versatile option for many bike types, including mountain bikes and electric bikes. The LCD display is a convenient feature, providing essential riding information such as battery power, speed, and mileage, and it also displays error codes to help diagnose and fix issues quickly. The inclusion of a half-separate type pedal assist sensor (PAS) simplifies installation and offers three riding modes: Throttle, PAS, and Manual, catering to different riding preferences.

The kit's design prioritizes safety with its waterproof brake sensor and brake cut-off power design, ensuring responsive and reliable braking. However, the kit does not come with a battery, which means you'll need to purchase one separately, adding to the cost. The product's weight, at 25.8 pounds, might be heavy for some users, affecting the bike's handling. Additionally, while the kit includes detailed assembly instructions and videos, installing the kit may still be challenging for those who are not mechanically inclined. In summary, the Voilamart 26" Waterproof Ebike Conversion Kit is a robust and versatile option for transforming a regular bike into a powerful e-bike, offering a blend of speed, safety, and convenience, though it may require some additional investment and effort for installation.

#3

YS YOSE POWER Waterproof Ebike Conversion Kit with Battery Electric Bike 26in Rear Wheel Hub Motor Kit 48V 500W Electric Bike Kit Brushless Cassette Engine

Rating
9.5
Motor Power
Battery Capacity
Compatibility

Most important from
32 reviews

Motor Power
I am very impressed with the power of my bike, the battery life, and the ease of operation.
Battery Capacity
I am very impressed with the power of my bike, the battery life, and the ease of operation.
Compatibility
The kit may require specific bike components for installation, but once set up, it works reliably.

The YS YOSE POWER Waterproof Ebike Conversion Kit is a comprehensive solution for transforming a regular bike into an electric version. It's particularly suited for those interested in a 26-inch rear wheel setup, thanks to its 48V500W brushless gear motor. The motor provides a respectable torque of 67 N.m and can reach speeds up to 40 km/h, making it a strong contender for city commuting or light trail riding.

A standout feature is its compatibility with both disc and V brakes, as well as 8 to 10 speed freewheel cassettes, making it versatile for different bike types. The kit includes all the necessary components like a battery, controller, display, throttle, and brake levers, although the tire is not included, which is something to consider when budgeting for a complete conversion.

The 48V13Ah battery is equipped with a 30A BMS for protection, promising a decent range and safety. The integrated controller simplifies installation by being part of the battery holder base. The LED display offers useful information such as battery levels and ride metrics, which is handy for managing long rides.

On the downside, the kit requires some technical skill for installation, which might be challenging for beginners. Its maximum weight recommendation of 25 pounds may not suit heavier riders or those carrying extra loads. Additionally, while the waterproof connectors are a plus, the lack of a tire could be an inconvenience for some users.

The kit comes with an 18-month warranty on battery cells and motor, and a one-year warranty on other components, which provides some peace of mind. It offers a good balance of power and compatibility, making it a viable option for adults looking to enter the electric bike scene with an existing bicycle.

Rating
9.5
Motor Power
Battery Capacity
Compatibility

Most important from
32 reviews

Motor Power
I am very impressed with the power of my bike, the battery life, and the ease of operation.
Battery Capacity
I am very impressed with the power of my bike, the battery life, and the ease of operation.
Compatibility
The kit may require specific bike components for installation, but once set up, it works reliably.

Buying Guide for the Best Electric Bicycle Conversion Kits

Choosing the right electric bicycle conversion kit can transform your regular bike into an efficient, eco-friendly mode of transportation. The key to making the best choice is understanding the various specifications and how they align with your needs. Here are the main factors to consider when selecting an electric bicycle conversion kit.
Motor TypeThe motor is the heart of your conversion kit, providing the power to assist your pedaling. There are two main types: hub motors and mid-drive motors. Hub motors are located in the wheel hub and are easier to install, making them suitable for casual riders and flat terrains. Mid-drive motors are positioned near the bike's crank and offer better performance on hills and rough terrains, ideal for more serious cyclists. Choose a hub motor for simplicity and ease of use, or a mid-drive motor for better performance and versatility.
Motor PowerMotor power, measured in watts (W), determines how much assistance the motor provides. Common power ratings range from 250W to 1000W. A 250W motor is sufficient for flat terrains and light commuting, while a 500W motor offers more power for moderate hills and longer distances. Motors above 750W are suitable for steep hills and heavy loads but may require more maintenance and can be less efficient. Consider your typical riding conditions and choose a motor power that matches your needs.
Battery CapacityBattery capacity, measured in ampere-hours (Ah), affects how far you can travel on a single charge. Higher capacity batteries (e.g., 14Ah or more) provide longer ranges, which is important for long commutes or extended rides. Lower capacity batteries (e.g., 8Ah) are lighter and more suitable for short trips. Think about your average ride distance and select a battery that offers a comfortable range without frequent recharging.
VoltageVoltage, measured in volts (V), influences the overall power and efficiency of the motor. Common voltages for electric bike kits are 36V and 48V. A 36V system is adequate for most casual riders and provides a good balance of power and efficiency. A 48V system offers more power and is better suited for hilly terrains and higher speeds. Choose a voltage that aligns with your performance expectations and riding environment.
ControllerThe controller regulates the power flow from the battery to the motor. It affects the smoothness of your ride and the responsiveness of the motor. Some controllers offer advanced features like regenerative braking and customizable power settings. Basic controllers are sufficient for straightforward riding, while advanced controllers are beneficial for those who want more control and efficiency. Consider your preference for simplicity versus customization when selecting a controller.
DisplayThe display provides important information such as speed, battery level, and distance traveled. Basic displays show essential data, while advanced displays offer additional features like GPS navigation and connectivity with mobile apps. If you prefer a simple, uncluttered interface, a basic display will suffice. For tech-savvy riders who want more information and features, an advanced display is the better choice.
CompatibilityCompatibility ensures that the conversion kit fits your existing bicycle. Check the wheel size, frame type, and brake system of your bike to ensure the kit components will integrate seamlessly. Some kits are designed for specific bike types, such as mountain bikes or road bikes. Make sure to choose a kit that matches your bike's specifications to avoid installation issues and ensure optimal performance.

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