VEVOR 1800W Electric Brushless DC Motor Kit - 48V 4500rpm Motor with Upgraded Speed Controller, Throttle Grip Kit for Go Karts E-Bike Motorcycle ScooterFeel the SpeedEnhance Your RideNew-Generation Controller100% Pure Copper Core MotorDurable & ReliableEfficient PerformanceApplicable Gear Ratio: 9 teeth: 64 teeth,No-load Rotation Speed: 5300 RPM,Load Capacity: ≤ 330.7 lbs / 150 kg,Noise: 70 dB,Rated Rotation Speed: 4500 RPM,Item Model Number: BY1020D,Product Weight: 12 lbs / 5.45 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