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10 Best Electric Bicycle Conversion Kits 2025 in the United States

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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
9.9
Chosen by1,462
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
9.9
Chosen by1,462
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.'

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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