Racerstar F540 Motor 4370\/3930\/3300\/3000KV 45A ESC For 1\/10 Buggy Racing CarsDescription:Motor  Features:- 4 pole 12 slot hi-torque motor design- CNC machined 6061 T6 billet aluminum heatsink can- High purity copper windings maximizes efficiency- High RPM ABEC 5 oversized bearings- Universal fit、 fits all 1\/16、 1\/18、 1\/20 brushless cars; multi-mounting system for M2.5 screws- Precision balanced rotor、 smoothness for best reliability and maxium RPM- Stator- super thin (0.35mm) laminations- Removalbe\/replaceable rotor- Precision engineered for maxium energy coversionMotor Specification:Watts: 820Max Voltage: 12V(4730KV)、 13V(3930KV)、 17V(3300KV)、 18V(3000KV)Max Amps: 66A(4730KV)、 60A(3930KV)、  47A(3300KV)、  45A(3000KV)Rotor Poles: 4Max RPM: 50000Length: 50mmDiameters: 36mm with finsShaft: \uffe03.175mmLength fo Extend Shaft: 15mmESC Features:- Specially desighed for RC car with excellent start-up、 acceleration and linearity feartures- Compatible with sensorless brushless motor- The strong resistant current capability、 excellent heat dissipation- Multiple protection features:  low voltage cut-off protection for lithium or nickel battery \/ over-heat protection \/ throtttle signal loss protection \/ motor blocked protection- Easily programmed and compatible with pocket-sized program cardESC Specifications:          Model       25A       35A       45A       60A       80A       120A           Cont. Current\/    Burst Current       25A\/100A       35A\/120A       45A\/180A       60A\/320A       80A\/480A       120A\/600A           Motor Type                                                    Sensorless Brushless Motor           Suitable  Car       1\/18、 1\/16       1\/18、 1\/16、 1\/14       1\/10       1\/10       1\/8       1\/8           Suitable Brushless Motor       ≥12T       ≥12T       ≥9T       ≥9T       ≥5.5T       ≥3.5T           Resistance       0.004ohm       0.003ohm       0.0014ohm       0.0007ohm       0.0005ohm       0.00035ohm           Battery       2 cells Lipo    4-6 cells NiMH       2-3 cells Lipo    4-9 cells NiMH       2-3 cells Lipo    4-9 cells NiMH       2-3 cells Lipo    4-9 cells NiMH       2-4 cells Lipo    4-12 cells NiMH       2-6 cells Lipo    4-18 cells NiMH           BEC Output       5V\/2A    (analog mode)       5V\/2A    (analog mode)       5.8V\/3A    (switch mode)       5.8V\/3A    (switch mode)       6.1V\/3A    (switch mode)       6.1V\/3A    (switch mode)           Dimension       25*30*14.5mm       25*30*18.5mm       32.5*34*24mm       32.5*34*24mm       41*51*36mm       41*51*36mm   Package Included:1 X Motor1 X ESC2 X Instruction