Feature:1. High quality components to ensure efficient operation. Equipped with motor heat sink, it can achieve longer working time.2. With excellent starting, acceleration and linear functions, it is suitable for 1/14 1/16 1/18 RC cars.3. High purity copper windings maximize efficiency and accurate design can achieve maximum energy coverage.4. 4 pole 12 slot high torque motor is designed with light weight, it is portable and easy to use.5. With a large number of programmable items, it is suitable for various chassis, tires and tracks.Specification:Item Type: 2838 4500KV Brushless Motor Set with 35A ESC Heat Sink SetMaterial: Aluminum Alloy + PlasticProduct Color: As Pictures Shown Product Weight: Approx. 182g / 6.4ozApplication: Fit for 1/14 1/16 1/18 RC CarMotor Parameters:Motor Color: BlueMotor Size: Approx. 40x28mm / 1.6x1.1inShaft Length: Approx. 15mm / 0.6inShaft Diameter: Approx. 3mm / 0.1inKV Value: 4500 KVMaximum Current: 43AMaximum Wattage: 600WIO1.4ANumber of Rotor Poles: 4 PolesResistance: 0.0415ESC Parameters:Constant Current: 35ABurst Current: 120A10SPower Supply: 2-3s Lithium Battery / 4-6S Ni-MH battery (not included)BEC: 5V 2A.Package List:1 x Motor1 x ESC1 x Heat Sink1 x Manual