Feature: 1. High Torsion: RC brushless motor set is uses 4 pole 12 slot high torsion rotor design, it has strong torsion and stable output power. 2. CNC Machining: CNC machining, high purity high temperature resistance copper coils, effectively provide high efficiency. 3. Multiple Protection Functions: With low voltage cut off protection, overheat protection, throttle signal loss protection. 4. Excellent Performance: Excellent start up, acceleration and linearity with super durability to ensure efficient operation. 5. Rich Programmable Items: This brushless motor set has rich programmable items for a variety of RC tires and tracks. Specification: Item Type: RC Brushless Motor Set Motor Parameters: Shell Material: Aluminum Alloy Color: Red Product Size: Approx. 36 x 60mm / 1.4 x 2.4in (excluding Cables and Shafts) KV Value: 4200KV Watts: 1200 Maximum Speed: 50000 Maximum Voltage: <12V Maximum Amperage: 100A Shaft Diameter: Approx. 3.175mm / 0.13in Shaft Length: Approx. 17mm / 0.7in Connector: 4mm Banana Plug Esc Parameters: Color: Black Shell Material: Plastic Product Size: Approx. 53 x 37 x 38mm / 2.1 x 1.5 x 1.5in (without Cable) Power Plug: T Male Continuous Current: 80A Peaking Current: 480A BCE Output: 6V 5A Applicable Battery (batteries Not Included): 2-4cells Lipo / 4-12 Cell NiMh Servo Parameters: Shell Material: Aluminum Alloy Color: Red Product Size: Approx. 55 x 43 x 20mm / 2.2 x 1.7 x 0.8in Operating Voltage: 4.8 to 7.4v Pulse Width Range: 500 to 2500usec Neutral Position: 1500usec Number of Teeth: 25T No Load Speed: 0.24sec/60° to 0.17sec/60° Peaking Stall Torsion: 29.5kg.cm to 32kg.cm Dead Zone Width: 5usec Operating Angle: 180°±3° (500 to 2500usec) Applicable: 1/8 1/10 RC Car Universal. Package List: 1 x Motor1 x ESC1 x User Manual1 x Servo1 x Metal Servo Arm5 x Plastic Servo Arm7 x Screw4 x Screw Barrel4 x Rubber Mat Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.