Motor Features:1.4 Pole 12 Slot Hi-torque Motor Design.2.High Quality: CNC Machined 6061 T6 Billet Aluminum Heatsink Can, High Purity Copper Windings Maximizes Efficiency, High RPM ABEC5 Oversized Bearings.3.Universal fit, for all 1:16,1:18 2S RC car.4.Precision balanced rotor,smoothness for best reliability and maximum RPM.5.Stator - Super Thin (0.35mm) Laminations.ESC Features:1.Water- proof and dust-proof for all-weather races;2.designed for RC car with excellent start-up,acceleration and linearity features.3.Compatible with sensorless brushless motor.4.The strong resistant current capability,excellent heat dissipation.5.Multiple protection features:Low voltage cut-off protection for litium or nickel battery/Over-heat protectionThrote signal loss protection/Motor blocked protection;6.Easily programmed and compatible with pocket-sized program card.Motor: for 2S Lipo or 6 cells NiMH :1. on-road: 28XX-Size or smaller motor with the KV less than 6000KV; 2. off-road/Buggy/Monster: 28XX-size or smaller motor with the KV less than 4000KV; for 3S Lipo or 9 cells NiMH : 1. on-road: 28XX-Size or smaller motor with the KV less than 4000KV; 2. off-road/Buggy/Monster: 28XX-size or smaller motor with the KV less than 3000KVESC DECLARATION:This is Electronic Speed Controller (ESC) for car. High power system for RC model is very dangerous, so please read this manual carefully.Since we can't control over the correct use, installation, application, or maintenance of our products, we'veno liability shall be assumed nor accepted for any damages,losses or costs resulting from the use of the product. Any claimsarising from the operating, failure of malfunctioning etc. will be denied.Motor Specifications:Brand: SURPASSHOBBYSeries: KK; Name: 2440 RC Motor; KV(RPM/Volt): 4600KVWatt:400; Max RPM: 50000; Max voltage: less than 8.4V; Max amps: 47A; Rotor poles: 4Diameter: 24mmLength: 39.5mmShaft: 2.3mmShaft length: 12mmConnector: 3.5mm goldESC Specification:Name: KK 35A ESCCont.Current/Burst Current: 35A/120AMotor Type: Sensorless Brushless MotorResistance: 0.0004ohmBattery: 2-3S Lipo/4-9Cells NiMHBEC Output: 5.0V/2A(analog mode)3KG plastic tooth digital steering gear S0300P:Locked torque: 3.5kgf.cm at 4.8V; 5kgf.cm at 6VNo-load speed: 0.20s/60 degree at 4.8V; 0.18s/60 degree at 6VWorking voltage: 4.8V~6VDCWorking frequency: 1520μs/333HzMotor type: DC motorGear type: plastic gearBearing type: 2BBIf using a voltage regulator, please maintain the voltage at 4.8V~6VDCcolour: red + blackMaterial: MetalSize: Motor: 24x35mm, ESC: 40x32x20mm, steering gear: 40.6x20.2x36.0mmPackage Contents:1 x Motor1 x ESC1 x ServoOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.