Feature: Full Set of reliable powerful 48v 1800w brushless electric motor & controller and other necessary components. Max power: 1800w-2000w, Rated torque: ≥3.5-10N.m, Rotating speed: 4300-4500RPM Brushless motor is much better than brushed motor, it's high efficiency, powerfrugal, low noise, Long lifespan, stable... Applicable to go karts, scooters, e-bike, atv, motorized bicycle, moped, mini bikes, pocket bikes, electric dirt bikes, etc. Motor Spec.: Model: 48VDC 1800W Brushless Motor Sproket: T8F 9Teeth Rated current: 28A Max Current： 40A No-load current: ≤3.0A Rated torque: ≥3.5-10N.m Max power: 1800w-2000w Motor weight: 10.5 lbs (4.8kg) Rated rotating speed: 4300-4500RPM Controller Spec.: Rated voltage: DC 48v Current limit: 32A Rated power: 1800w Matching motor: DC Brushless motor Under Voltage Protection: 42V Package Contents: This is a multi-option lisitng, please choose the item you need from the drop down menu. as the option " package includes", clicking every option, the item is as the image show. Why choose Brushless motor? What is the advantages of brushless motor : 1. Less electrical and electromagnetic noise 2. Long lifespan: No brushes to wear out, around triple lifespan as brushed motor 3. Low maintenance: No brushes to replace 4. Powerfrugal: Power consumption is 1/3 of brushed motor 5. High efficiency: Brushless motors are typically 85-90% efficient whereas brushed DC motors are around 75-80% efficient.