Features: 1.High Performance Motor Kit: Powerful high speed motor kit, the working voltage is DC24V and the rated power is 250W, rotor precise balancing, dependable to use. 2.Application: Electric motor controller kit can be widely used in motorized bicycle, moped, mini bikes, pocket bikes and electric dirt bikes, scooters, electric bike, ATV and so on. 3.Advantage: Electric high speed DC motor adopts aluminum alloy material, high temperature resistant, high strength, good heat dissipation, more durable. 4.Package Contents: The package includes 1pc electric motor, 1pc controller, 1pc handle grip, 1pc, electric lock, 2pcs electric lock keys, 1pc 146L chain, 1pc 55 teeth chainring. 5.Easy to Operate: The electric DC motor controller adopts simple design, simple operation, stable performance, convenient and safe to use. Specification: Item Type: Electric Motor Controller Kit Material: Aluminium Alloy Motor Working Voltage: DC24V Motor Rated Power: 250W Controller Working Voltage: DC24V Controller Rated Power: 250W Number of Teeth on The Chainring: 55 Teeth Number of Links: 146 Applicable Models: Suitable for electric scooters, electric bicycles and tricycles, etc replacement.