These premium 170mm ISIS aluminum crank arms are designed as a direct replacement for Bafang mid-drive e-bike motors.
Key Specifications:
- Length: 170mm
- Fitment: Compatible with Bafang M620, G510, and M820 mid-drive systems
- Interface: ISIS spline spindle
- Material: Forged aluminum alloy, lightweight yet durable
- Purpose: Perfect for replacing worn or damaged cranks, improving pedaling efficiency
- Includes: Left and right crank arms with installation hardware
Engineered to handle the high torque of your Bafang motor, these crank arms deliver smooth, reliable pedaling performance for city commutes, trekking, and long-distance rides.








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