10 Best Electric Bike Kits 2025 in the United States

The Bafang 1000W Mid Drive Kit is a solid choice for anyone looking to convert a regular bike into a powerful electric bike, especially if you enjoy mountain or road biking. With a strong 1000-watt brushless motor, it can handle hills and speeds above 30 mph on flat roads, offering a smooth ride thanks to its upgraded CAN protocol controller. This kit supports three riding modes—full electric, pedal assist, and push assist—giving you flexibility based on how much effort you want to put in. The kit includes a clear LCD display and throttle for easy control. It fits a wide range of bikes with standard bottom bracket sizes, making it quite versatile.

Installation is designed to be user-friendly, with helpful videos provided, though some mechanical skill or assistance might be needed because of the motor's weight (about 6 kg) and the complexity of mid-drive systems. The battery is optional, so you can decide based on your needs and budget. One thing to keep in mind is that while the kit comes with most necessary accessories, you might need additional tools or parts depending on your bike. The company also offers good after-sales support with warehouses and service centers in multiple regions, which is reassuring.

If you want a powerful and reliable mid-drive kit for mountain or road biking that boosts your riding experience, this Bafang kit is worth considering, especially if you're comfortable with a bit of DIY installation.

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 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.