Specification Color: Silver, Black Model: BM1109 Material: Aluminum, Pure Copper Assembly Required: Yes Brushless Motor Voltage: 48-72V Load Weight: Approx. 100-200kg/220.46-440.92lbs No-load Current:? 8.8A Rated Current:? 43A No-load Speed: 6000rpm Rated Speed: 4900rpm Rated Torque: 5.4 N. M Motor Efficiency:? 80% Controller Voltage: 48-72V Power: 3KW Protection grade: IP33 Insulation grade: E Gross Weight: 6.9kg/ 15.21 lbs Net Weight: 6.2kg/ 13.67 lbs Leg Spacing: 11.7cm/4.61in Leg Height: 5mm/0.2in Interface Length: 29mm/1.14in Motor Size(? L): 10.713.4cm/4.215.28in Package Size: 3423.517.5 cm/13.399.256.89 in. This product is made of high-quality aluminum housing rubber and pure copper coil as raw material and adopts a brushless motor, which can provide you with higher quality assurance. Its high speed, high torque, and high power will provide strong support for your work efficiency. Whether it is an electric motorcycle, a beach bike, or other mechanical equipment, it can be a powerful power supplement. High Applicability: This product is universal for 48V/60V/72V in many styles, thus having high adaptability. High-quality Material: This product is made of aluminum housing rubber and pure copper coils, with high-temperature resistance, low noise, anti-corrosion, and anti-rust properties. Easy to Store and Carry: The compact motor size (4.215.28 inches) and light weight make them easy to carry and store. You can easily put them in the trunk as a power supplement at any time. High Efficiency: The product’s high speed (6000rpm) and high torque 5.4N. M allow you to save time by effectively increasing work efficiency. Easy to Install: The simple product structure and the comprehensive mounting parts in the package can help you make connections quickly and accurately. Brushless Motor: The brushless motor is more efficient in converting electrical energy into mechanical energy because there does not have friction loss. And since brushless motors have permanent magnets on the rotor, it is easier to produce high torque than the coils on traditional brushed motors. Reversible: The product can be operated clockwise or counterclockwise by the motor’s reversing wire or the handle reversing switch, so as to meet your various usage needs. Multi-function Controller: The controller has an electronic brake, 3 speeds (low, medium, and high speed), reverse function, indicator light, and power lock function, which makes the use more precise and easy. High Safety: The product has an IP33 protection level and an E-class insulation level, which can provide higher safety for your use. Anti-slip Handle: The diamond-shaped handle surface can effectively enhance friction, thus making the grip more comfortable and stable. Feet: The feet on the bottom of the motor can effectively improve the stability of the motor, thus ensuring a more stable and efficient operation of the product. This product is suitable for electric motorcycles, beach bikes, go-karts, modified bicycles, mechanical equipment, etc. Material: Aluminum, Pure Copper. Brushless Motor Voltage: 48-72V. No-load Current:? 8.8A. Rated Torque: 5.4 N. Gross Weight: 6.9kg/ 15.21 lbs. Net Weight: 6.2kg/ 13.67 lbs. Leg Spacing: 11.7cm/4.61in. Leg Height: 5mm/0.2in. Interface Length: 29mm/1.14in. Motor Size(? L): 10.713.4cm/4.215.28in. Package Size: 3423.517.5 cm/13.399.256.89 in. 1 Foot Pedal Throttle. 1 Set of T8F Chain and T8F Chain Ring. All Accessories for Installation. Motor speed will depend on your load weight and other conditions. Please do not let the motor run in reverse for a long time, it is not friendly to the motor life. Please allow the slight color difference caused by the shooting light and the 1-3 cm error due to manual measurement, and make sure you do not mind before ordering.