Tongsheng TSDZ2 ebike Kit Mid Motor,Torque Sensor 52V 750w Ebike Motor,Throttle/Brake/Front Light included TSDZ2 Torque Sensor Central Motor. Power: 750W. Voltage:52V. With Throttle. With Cutoff Brake Grid Feature: 1. Easy assembling; 2. Maximum Torque: 80N.M; 3. Built-in Controller and both side torque sensor; 4. Weight: 3.6Kg; 5. 8Pin VLCD5 Display. 6. Power: 750w; 7. Power Assistant Ratio: 36%~300%; 8. Limited Speed: 25Km/h; 9. Chainwheel: 42T; 10.High efficiency, low battery power consumption, safety long riding. 11.Current cutoff as long as pedaling stopped.