48V750W68mm Mid Drive Motor Specification. Bafang Model:M315 MM G340.750. C Power: 750W Voltage:48V Controller Current: 24A Max speed with Pedal Assistance: 50-55km/h No Load Speed(RPM) :126±7 Load Speed(RPM): 110±6 No-load Speed:59.7km/h Load Speed: 47.5km/h MAX Torque: 100N. M Efficiency: > 78% PAS SENSOR : Speed Sensor Reduction Ratio: 1 : 21.9 Motor Operation Temperature:-20? -45? Bafang Controller: Integrated Inside the Motor Bracket bottom length. 68mm(The bottom bracket shall be 68-73mm). Certification:CE/EN 14764/ROHS Waterproof Grade:IPX5 Net Motor Weight: 4.3kg. 1 Set Thumb Throttle 1 Set Speed Sensor 1 Display (Optional) 1 4 to 1 Cable 1 Accessories 1 User Manual 1 XT60 Battery Extension Cable (Free) 1 6V Headlight (Free) 1 Wrench Tool (Free). If you choose the battery option, it comes with a charger. If you choose “no battery, ” please note that the motor kit does not include a battery. Note: Gear shift sensor is not included.