Bafang 48V 500W Mid-Drive E-Bike Conversion Kit

The Bafang 500W 48V BBS Mid-Drive Motor

Unleash incredible climbing capability and speed. The Bafang 500W 48V BBS02B is the ultimate mid-drive kit for riders seeking high-velocity commuting, massive torque, and unrelenting efficiency.

By utilizing a 48V electrical architecture, this mid-drive motor runs significantly cooler and more efficiently than lower-voltage systems. Because it sits inside your bicycle's bottom bracket, the motor drives the chain directly and leverages your rear cassette gears. When you face extreme hills, simply downshift your bike to keep the motor in its sweet-spot RPM—maximizing battery range and preventing overheating.

Is Your Bike Ideal for This 500W Conversion?

The 500W BBS02B is exceptionally versatile, but physical frame specifications determine a perfect fit. Here is what makes a bike the ideal candidate:

• Standard Bottom Bracket (68mm to 73mm): The motor spindle fits standard BSA/JIS threaded bottom bracket shells with an inside diameter of approximately 33.5mm. This covers the vast majority of hardtail mountain bikes, hybrids, commuters, and road frames.
• Aluminum or Steel Frames: Mid-drive motors apply significant clamping force to the bottom bracket shell. Sturdy aluminum and steel frames handle this torque beautifully. Carbon frames are generally not recommended.
• Heavy Duty Commuters, Hybrids & Cargo Bikes: Perfect for hilly commutes, cargo transport, and riders who want to maintain high cruising speeds (up to 25-28 mph) on private property or where local laws permit 500W power.