10 Best Electric Bicycle Conversion Kits 2025 in the United States

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.

The Bafang Mid Drive Kit (models BBS02B and BBS-HD) is a versatile electric bike conversion kit compatible with bottom brackets between 68-73mm and suitable for various bike types including mountain bikes, city bikes, and recumbent trikes. It offers motor power options of 500W, 750W, and 1000W, powered by a 48V or 52V system, delivering strong torque ranging from 100 to 160 Nm. This allows the bike to tackle hills and different terrains with speeds up to 45 km/h.

The kit includes most necessary components such as brake levers, chainwheels, throttle, speed sensor, and installation tools. However, the battery and LCD display are optional and must be purchased separately, which is important to consider for those seeking a complete setup immediately. Installation is designed to be beginner-friendly, supported by manuals, online videos, and US-based customer support to assist if needed.

There are some limitations, including the requirement for specific bottom bracket sizes and compatibility only with bikes that have disc or V-brakes and chain drives, so it may not fit all bicycles. Additionally, 73mm screws are not included, which may entail extra cost or effort. For users comfortable with some DIY assembly, this Bafang kit provides powerful and customizable performance along with reliable support, provided the bike’s compatibility and battery purchase are carefully planned.