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. 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 1 x Motor 1 x ESC 1 x Heat Sink 1 x Manual