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 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.

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.