Feature:1. [4500KV Motor 25A ESC] 4500KV Motor: 4 pole 12 slot high torsion motor design with strong torsion and stable output power. 25A ESC: High quality components for efficient operation.2. [2.2KG Metal Servo] Waterproof, high performance digital standard 2.2KG 3 wire metal servo. Aluminum alloy shell provides longer service. Smoothness for best reliability.3. [Multiple Protection] Brushless motor ESC servo combo has excellent start, acceleration and linearity. Low voltage cut off protection, overheat protection, throttling signal loss protection.4. [High Durability] Brushless motor with 25A ESC high toughness stainless steel output shaft, high accuracy bearings make the motor super durable. Suitable for 1/16 1/18 RC Car.5. [High Performance] Brushless motor ESC servo combo has high purity high temperature resistant copper windings that maximize efficiency. CNC machined 6061 T6 aluminum front and rear covers.Specification:Item Type: Brushless Motor ESC Servo KitBrushless Motor ParametersShell Material: Aluminum AlloyColor: RedKV Value: 4500KVSize: Approx. 24x35mm / 0.9x1.4in (Excluding Cable and Shaft)Shaft Diameter: Approx. 2mm / 0.08inShaft Length: Approx. 12mm / 0.5inWatts: 300Maximum Speed: 60000Maximum Voltage: <13.2VMaximum Amperage: 22AConnector: 3.5mm Banana PlugESC ParametersMaterial: Plastic, Aluminum AlloyColor: RedSize: Approx. 40x27x15mm / 1.6x1.1x0.6in (Excluding Cable)Power Plug: T MaleContinuous Current: 25APeak Current: 100ACE Output: 5.8V/3AApplicable Battery (Batteries Not Included): 2-3Cells Lipo / 4-9 Cell NiMhServo ParametersShell Material: Aluminum AlloyColour: BlackWorking Voltage: 4.8-6VWorking Speed (4.8V): No load 0.10sec/60 degreeWorking Speed (6.0V): No load 0.08sec/60 degreeStall Torsion (4.8V): 1.8kg.cmStall Torsion (6.0V): 2.2kg.cmProduct Size: Approx. 43x35x16mm / 1.7x1.4x0.6in Applicable: 1/16 1/18 RC Car Universal.Package List:1 x 4500KV Motor1 x 25A ESC (Battery Not Included)1 x Manual 1 x 2.2KG Servo1 x Servo Arm4 x ScrewNote:Please allow some errors due to manual measurement.