Feature:1. Advantages of The Motor: 540 brush motor has large torsion, adopts two way bearings, strong magnetic force, low calorific value, high power and low interference.2. Superior Components: Using high purity copper windings, sealed bearings have low friction and low noise, and the precisely balanced rotor has good stability.3. Overheating Protection: When the temperature reaches 100 , the output power decreases and the speed slows down. When the temperature drops, the speed will return to normal.4. Brush ESC: Equipped with 320A ESC, with control protection, low voltage protection, overvoltage protection, good heat dissipation performance, forward 320A, reverse 240A.5. Safe and Reliable: Automatically find the center position, high frequency drive system, with overheat protection, low voltage protection, use low resistance field effect transistor, with forward and backward function, suitable for cars and ships.Specification:Item Type: 540 Brushed MotorMaterial: Iron and plastic and copperColor: Black GreenUse Voltage: 7.2-7.4VMaximum Voltage: 12VLength: Approx. 50mm or 1.97in (Without Shaft)Diameter: Approx. 36mm or 1.42inShaft Length: Approx. 12mm or 0.47inShaft Diameter: Approx. 3.175mm or 0.13in320A Brushed ESC:Forward Current: 320ABackward Current: 240ABraking Current: 250AVoltage Range: 4.8-8.4VPWM Frequency: 1.5KHZBEC Voltage: 5.6V, 2ASize: Approx. 34x34x16mm or 1.34x1.34x0.63in (without heat sink)Application: for Axial Scx10 90046, for Traxxas Trx4, for D90, for HSP, for Redcat, for Tamiya, for HPI installation.Package List:1 x 540 Brushed Motor1 x 320A ESC2 x Connecting Wires Note:1. Due to manual measurement, 13mm error is allowed, thank you!2. Due to the difference between different monitors, the picture may not reflect the actual color of the item.3. If the rotation of the motor is wrong, please exchange the two motor wires. The motor wire is not divided into positive and negative poles