Feature: 1. 4-pole 12-slot high-torque motor design. CNC machined 6061T6 billet aluminum radiator water tank. 2. High‑purity copper windings can maximize efficiency, high‑speed large bearings. 3. The Accurately balanced rotor, stable, with best reliability and maximum RPM. 4. Completely waterproof design, suitable for various environments and reliable in use. 5. Multiple protection functions, low voltage protection, over temperature protection. Throttle control protection, stall protection. Specification: Item Type: Brushless RC Motor Color: Black and Red Material: Aluminum Alloy+Copper KV(RPM/Volt): 5200KV Wattage: 900W Maximum Revolving Speed: 50000 Maximum Voltage: <9.6V Maximum Ampere: 94A IO: 3.7A Resistance: 0.0051 Rotor Pole: 4 Motor Size: Approx. 36x50mm/1.4x2in (Diameter x Length) Motor Shaft Size: Approx. 3.2x15mm/0.1x0.6in (Diameter x Length) Connector: 4mm Banana Connector Compatible with: for Traxxas/HSP/Redcat/Tamiya/Axial SCX10 D90/HPI Weight: Approx. 179g/6.3oz. Package List: 1 x 3650 Brushless Motor Note: 1. Please allow 0‑2 cm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.Precautions:1. Before using this motor, please make sure that the power mix is ​​reasonable. Unreasonable power mix will cause the motor to be overloaded and damaged.2. When installing the motor, do not overtighten the screws. Be sure to use suitable motor mounting screws.3. Before connecting the motor, please make sure that the parts that need insulation are handled well, as a short circuit will destroy the product.4. Before the gear is installed, full throttle operation is prohibited. High‑speed operation without load may damage the motor.5. Please make sure to connect the components correctly. If the remote control model car is connected incorrectly, it may not work properly, or the components may be damaged or other unpredictable conditions.6. Avoid excessively high working temperature of the motor, which may cause the rotor to demagnetize and cause damage to the motor.7. Do not touch the motor after use to avoid overheating and scalding. Wait until the motor is completely cooled down before using it.