Feature: 1. 4 Pole 12 Slot Hi-torque Motor Design 2. High Quality: CNC Machined 6061 T6 Billet Aluminum Heatsink Can, High Purity Copper Windings 3. Maximizes Efficiency, High RPM ABEC5 Oversized Bearings Universal fit, for 1:10 2S RC car , 3S RC racing car 4. Precision balanced rotor,smoothness for best reliability and maximum RPM 5. Stator - Super Thin (0.35mm) Laminations Specification: Features: 4 Pole 12 Slot Hi-torque Motor Design. High Quality: CNC Machined 6061 T6 Billet Aluminum Heatsink Can, High Purity Copper Windings. Maximizes Efficiency, High RPM ABEC5 Oversized Bearings. Universal fit, for 1:8 1:10 2S RC car, 3S Remote Control racing car. Stator-Super Thin (0.35mm) Laminations. Precision balanced rotor, smoothness for best reliability and maximum RPM. Note: 2S battery is recommended Specifications: GTSKYTENRC 3660 Brushless Motor KV(RPM/Volt): 2600KV/3100KV/3800KV/4200KV Optional 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):3.175 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 : 1. on-road: 3660-Size or smaller motor with the KV<3000KV 2. off-road: 3660-size or smaller motor with the <3000KV Suitable Car: 1/10 1/8 RC Car Resistance: 0.0005ohm Battery: 2-4S Lipo/4-12Cells NiMH BEC Output: 6V/5A (Switch mode) Dimensions/Weight: 53x37x38mm/92g Package Information: Package Size: 12*8*1.5cm Package Weight: 329g General Box Package Packing List: 1* 2600KV Brushless Motor 1* 80A ESC Package List: 1* 2600KV Brushless Motor 1* 80A ESC