1、Good Performance: Adopting high purity copper winding and sealed bearing, built in cooling fan and external demagnetizing sleeve, high power, low friction and low noise. 2、Accurate and Reliable: Brushed motors for precise and maximum energy conversion. Rotors are precisely balanced and smooth for increased reliability and maximum speed. 3、High Efficiency: High purity copper windings maximize the efficiency of brushed motors, and high strength magnets provide stable brushed motor performance. 4、Anti Stalling: When the torque needs to exceed the RPM, the motor speed is reduced and the power distribution is sensitive to provide a smooth vehicle start, preventing the car from shaking and stalling when starting. 5、Stable Performance: Easy installation and removal, 1/3 reduction gearbox with ultra high performance, effective protection of the gearbox motor body, increase the high torque output. Item Type: RC Accessories Color: Black Green Weight: 270g / 9.52oz Material: Iron Copper 540 Brushed Motor: Product Length: 5cm / 1.97in (without shaft) Product Diameter: 3.6cm / 1.42in Product Shaft Length: 1.3cm / 0.51in Product Shaft Diameter: 0.3175cm / 0.125in 1/3 Reduction Gearbox: Reduction Ratio: 1:4.2 Total Diameter: 3.6cm / 1.42in Total Length: 4.45cm / 1.75in Shaft Length: 1.5cm / 0.59in Shaft Diameter: 0.3175cm / 0.125in 15T Gear: Diameter: 0.83cm / 0.33in Length: 1cm / 0.39in Bore: 0.3175cm / 0.125in Suitable for Tamiya 1/14  head 1/10 offroad climbing car DIY conversion 1 x 540 Brush Motor 1 x 1/3 Reduction Gearbox 2 x Wiring 1 x 15T Gear 2 x Shims 2 x Set Screws