ZSM2136A- Two Speed Automatic Rear Hub Motor For Classic E-city bikes

Advantages:

• Comply with EU motor power regulations.

• The transmission and motor complement/optimize each other, with better performance and longer durability. The transmission supplements motor torque, no need large motor torque or big motor discharge current,which increases mileage. When pedaling hard, the motor helps the hub move forward, reducing the force on transmission.

• Automatic shift, no manual operation, simple and comfortable riding.

• Two-speed automatic shift, match the bicycles below 26 inches, light starting at low speed and low cadence at high speed.

• Use large modulus gears that far exceed Shimano, higher gear strength and durability.

• The start gear adopts a self-centering one-way clutch, can cut into the power at any angle, no empty pedaling, no ratchet noise.

• Internal shift, no need shift cable. Simple layout,maintenance-free, lower operating cost.

• Mature hub motor module,   lower cost and failure rate than mid-motor.