1、BRUSHLESS MOTOR: This RC car brushless motor is blue color, KV value is 3900KV. Easy to use and easy to replace. 2、TORSION AND WORKING SPEED: The RC motor kit has the servo whose torsion is 1.8 to 2.2KG.cm(6V) and working speed is 0.14 to 0.16s per 60°(6V). 3、ESC: This RC car motor kit has the ESC whose working voltage is DC5.5 to 9V, rated voltage is 7.4V, continuous current is 25A, peaking current is 50A. 4、APPLICABLE MODELS: RC car brushless motor servo ESC kit is applicable for SG1603 SG1604 SG1607 SG1608 and other 1/16 RC cars. 5、ALUMINUM ALLOY AND PLASTIC: This RC car brushless motor ESC servo kit is made of aluminum alloy and plastic material, more sturdy and durable. Item Type: Remote Control Car Brushless Motor Servo Kit Material: Aluminum Alloy, Plastic Brushless Motor Parameters Color: Blue Motor Size (Without Shaft And Cable): Approx. 24 x 35mm / 0.9 x 1.4in KV Value: 3900KV ESC Parameters Continuous Current: 25A Peaking Current: 50A Servo Parameters: Torsion: 1.8-2.2KG.Cm (6V) Working Speed: 0.14-0.16s/60° (6V) Applicable: For SG1603 SG1604 SG1607 SG1608 And Other 1/16 RC Cars 1 x Brushless Motor 1 x Brushless ESC 1 x Servo 1 x Motor Heat Sink 3 x Tie 2 x Screw 1 x Manual