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 Set Material: Aluminum Alloy + Plastic Product Color: As Pictures Shown Product Weight: Approx. 182g / 6.4oz Application: Fit for 1/14 1/16 1/18 RC Car Motor Parameters: Motor Color: Blue Motor Size: Approx. 40x28mm / 1.6x1.1in Shaft Length: Approx. 15mm / 0.6in Shaft Diameter: Approx. 3mm / 0.1in KV Value: 4500 KV Maximum Current: 43A Maximum Wattage: 600W IO：1.4A Number of Rotor Poles: 4 Poles Resistance: 0.0415 ESC Parameters: Constant Current: 35A Burst Current: 120A（10S） Power 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