Specifications: KV(RPM/Volt): 3100KV Watt: 1200 Max RPM: 50000 Max Voltage: <12V Max Amps: 100A Rotor Poles: 4 Diameter: 35.5mm Length: 59mm Shaft Length: 17mm Connector: 4.0mm Gold Weight: 218g Shaft(mm): 3.175mm 80A  Brushless ESC: Name: 80A ESC Cont.Current/Burst Current: 80A/480A Motor Type: Sensorless Brushless Motor For 2S Lipo or 6 Cells NiMH: 1. On-road: 3670/3660-Size or smaller motor with the KV<3000KV 2. Off-road: 3670-size or smaller motor with the <3000KV For 3S-4S Lipo or 9 cells NiMH: On-road: 3660-Size or smaller motor with the KV<3000KV Off-road: 3660-size or smaller motor with the <3000KV Suitable Car:  1/10 1/8 Remote Control Car Resistance: 0.0005ohm Battery: 2-4S Lipo/4-12Cells NiMH BEC Output: 6V/5A (Switch mode) Dimensions/Weight: 52*39*38mm/92g Programming Card: Low Voltage Cut off: 3.1V/Cell 2.8V/Cell 3.3V/Cell No Cut-off Start Mode: Medium, Soft, Strong Max Brake Force: 25%, 50%, 75%, 100% Max Reverse Force: 25%, 50%, 75%, 100% Neutral Range: 6%, 9%, 12%, Work State Package Information: Package Size: 12*8*5cm Package Weight: 362g Package List: 1* 3100KV Brushless Motor 1* 80A Brushless ESC 1* Programming Card