Electric Bike Pedal Disc Sensor 12" Diameter Magnetic 65mm Opening 15mm Magnetic Sensor Compatible with Green 7.7 ZT20R Z801 Z802

This bicycle pedal assist sensor disc is equipped with 12 magnets, a diameter of 65 mm, and a 15 mm opening. The sensor disc is compatible with Green 7.7, Z801, Z802, and ZT20R electric bikes. Made of alloy, plastic, and magnetic material, it is durable and long-lasting. As long as the inner ring of the auxiliary sensor is tightened onto the intermediate shaft and the housing is fixed to the frame, there is no need to remove the intermediate shaft, making installation convenient, stable, and reliable. Easy to install: It is more economical, easy to ride, small in size, and lightweight. Suitable for most electric bikes.