Superior Performance: 4 pole rotor design, powerful torsion and stable output power, low friction, low noise, high accuracy. High hardness aluminum CNC shell, high temperature resistant copper coil 0.2mm thickness silicon steel sheet, high permeability, high silicon content, good insulation and heat resistance. High Durability, Detachable Design: RC brushless motor adopts explosion proof rotor, high toughness stainless steel transmission shaft and high accuracy superior bearings to make the motor super. Detachable structure design, easy to clean and repair, effectively extend the motor life and improve efficiency. Safe and : The highly electronic switch of RC brushless motor avoids the failure of traditional mechanical switch due to dirt and water. Proportional brake with 9 levels of braking power or maximum braking power and 9 levels of traction braking power. Sparkproof Circuit: Brushless motor esc has built in sparkproof circuit, which not only effectively guards the battery and ESC connector from damage, but also guards the user from bodily injury caused by the strong electric sparks generated at the moment of battery and ESC connection. Extensive Compatibility and Waterproof design: Eelectronic speed controller set is compatible with sensorless brushless motors and sensing brushless motors (only in sensorless mode), and is waterproof in all weather. Parameters: RC brushless motor kit with super internal switching mode BEC, switchable voltage 6V 7.4V, control or current 6A 25A, can easily drive large torsion suit and high voltage servo. Advanced programming via portable LED program card. Item Type: RC Brushless Motor Kit Material: Aluminum Alloy, Plastic, Copper, Steel Model: 4092 Color: Black KV (RPM/V): 1450KV Output Power: 4200W Maximum Speed: 50000 Maximum Voltage. 1 x 4092 Brushless Motor. 1 x 160A 8S ESC. Due to manual measurement, please allow 1-3mm/0.04-0.12in error, thank you! Due to the differences between different monitors, the picture may not reflect the actual color of the item. Please unload the cooling fan before using this ESC in water: clean and dry after use to avoid rust of the connector. Our listing price includes the value of goods, packaging cost, and export. Please check with your country’s. We will reply your message within 48 hours. If you do not receive our reply within 48 hours, pls. Post a message again because sometimes our message system may block some emails. If you are satisfied with our service, pls. Our aim is to provide Level Customer Service, your recognition will encourage us greatly and serve you better. We strive to keep all our customers satisfy. We will do our up most to exceed your expectations in customer service, communication and dispatching of your orders.