ZSH3185A-3-Speed Automatic Hub   For Premium E-city bikes

Features:

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

• Three-speed automatic shift, well match the e-bikes with mid-motors, light starting at low speed and low cadence at high speed, more comfortable riding.

• The transmission Max torque is up to 100Nm, which is twice of Shimano, can meet the stronger torque requirements of mid-motors

• 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.

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