3kw, 48v, 2800rpm 4kw, 48v, 1500rpm 4kw, 48v, 2500rpm 4kw, 48v, 2800rpm 4kw, 72v, 2800rpm product advantages:1)low noise2)easy brush replacement3)strong capacity of overload,can bear 3 times overload current,and 4.5 times overload torque4)can realize the step less smooth speed,satisfy the heavy load vehicles to smart,hill climbing and speed chang movement on different roads5)don't need to ...