10 Best Electric Bike Kits 2025 in the United States

The Bafang Mid Drive Kit offers a strong and versatile solution for converting most mountain, road, and city bikes into electric bikes. It comes in 500W, 750W, and 1000W motor options, providing plenty of power (up to 160 Nm torque) for smooth hill climbing and faster rides reaching about 45 km/h. The mid-drive motor design is efficient and works well for various terrains. It supports both throttle and pedal assist modes, giving you flexible riding options, plus a standard cycling mode if you want to pedal without electric help.

One of its key advantages is compatibility: it fits bottom brackets of 68-73mm up to 120mm length and works with most disc or V-brake, chain-driven bikes. This makes it a good choice if you want to keep your original bike but add electric power. The kit includes essential components like brake levers, a chainwheel, throttle, speed sensor, and tools for installation, while the battery and display are optional extras you can add based on your needs.

Installation is supported with manuals and many helpful online videos, making it approachable even if you’re not a mechanic, though some mechanical skill is still helpful. Customer support is US-based and responsive, which adds confidence if you need assistance. The kit's aluminum build should be durable and lightweight. Since the battery isn’t included, you’ll need to purchase it separately, and 73mm screws aren’t provided, requiring extra parts for some bikes. It requires a compatible bike with chain drive and specific bottom bracket sizes, so it’s not a universal fit for every bicycle. This Bafang kit serves as a powerful, flexible, and well-supported electric bike conversion option, especially suited for mountain and city bike riders looking for a reliable mid-drive system without buying a new electric bike.

The BAFANG 48V 750W Electric Bike Conversion Kit offers an efficient way to turn a regular bike into an electric one. It features a powerful 750W mid-drive motor, which should deliver ample power for most users, allowing for speeds up to 40 km/h. The motor is compatible with disc brakes, enhancing safety and driving comfort. A key highlight is the 15Ah battery, which can provide a commendable range of up to 80 km, ensuring longer rides without frequent recharges. Its slim hailong design makes it easy to attach to the bike frame without adding much bulk.

The kit includes essential components such as the motor, controller, brake lever, thumb throttle, C18 LCD display, and necessary cables, making it a comprehensive package for DIY enthusiasts. The dual riding modes (e-bike and pedal support) offer flexibility for both leisurely and exercise-focused rides. However, potential buyers should be aware that assembly is required, which might be a bit challenging without prior experience. Additionally, while the package is robust, it might be more suitable for those who are comfortable with DIY projects. This kit is ideal for commuters, leisure riders, and those looking to enhance their bike's performance with electric power.

The PEXMOR Electric Bike Conversion Kit is designed to convert a traditional bike into an electric one, boasting a powerful 48V 1200W brushless motor for efficient and quiet operation. Its standout feature is the impressive top speed of 36.6 mph, making it suitable for those who enjoy fast rides. The kit is compatible with 26-inch bicycle frames, which are quite common, ensuring broader usability. The upgraded 3-mode controller enhances the bike's adaptability by allowing the motor to operate even when some components fail, adding to its reliability. Additionally, the sine wave controller ensures high efficiency and low noise during rides.

The Pedal Assist System (PAS) offers versatility with four riding modes to reduce fatigue and make long trips more comfortable, which is ideal for regular commuters or long-distance riders. Safety is well addressed with integrated brake levers that cut power during braking, a torque arm for stability, and a durable aluminum alloy frame that supports up to 242 lbs. The LCD display provides essential riding information like battery power and speed, and the twist throttle allows easy speed control. However, users must ensure compatibility with the 135mm rear dropout spacing.

The ease of assembly, aided by detailed instructions and tools, makes it accessible for most users, although some technical knowledge might be beneficial. This kit is a great option for those looking to upgrade their bike for enhanced speed and efficiency, with a solid mix of power, durability, and safety.