VEVOR 1800W Electric Brushless DC Motor Kit - 48V 4500rpm Motor with Upgraded Speed Controller and Throttle Grip Kit for Go Karts E-Bike Motorcycle Scooter DIYFeel the SpeedEnhance Your RideNew-Generation Controller100% Pure Copper Core MotorDual-Direction ControlEfficient PerformanceApplicable Gear Ratio: 9 teeth / 11 teeth: 64 teeth,No-load Rotation Speed: 5600 RPM,Load Capacity: ≤ 330.7 lbs / 150 kg,Noise: 70 dB,Rated Rotation Speed: 4500 RPM,Item Model Number: JZ48V1800W,Product Weight: 11.2 lbs / 5.1 kg,Rated Power: 1800W,Product Dimensions: 5.3 x 4.2 x 4.4 inch / 134 x 107 x 112 mm,Rated Torque: 4N·m,Rotation: CW/CCW